日韩亚洲一区中文字幕,日韩欧美三级中文字幕在线,国产伦精品一区二区三区,免费在线欧美性爱链接

      1. <sub id="o5kww"></sub>
        
<legend id="o5kww"></legend>
        <style id="o5kww"><abbr id="o5kww"></abbr></style>
        <strong id="o5kww"><u id="o5kww"></u></strong>
        

        2. 


          
	
          
		
	
          
	
          
		
          
			
		
          
		
          
	
          

          



          

          

          


          


          
	
          
			
          

			
          
				
          My brother has been teaching ________ he was 21 years old.
          A．when B．if C．for D．since 
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D
          

          解析試題分析：主句用的是現(xiàn)在完成時(shí)態(tài)。since，自從……（到現(xiàn)在）現(xiàn)在完成時(shí)的標(biāo)志詞。句意：我的弟弟自從21歲就一直在教學(xué)。
          考點(diǎn)：考查連詞。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
				練習(xí)冊系列答案
		
          
		
				
			

					
          
				相關(guān)習(xí)題
			
          
						
		
          
			
          
				科目：初中英語
				來源：
				題型：單選題
			
          

						
          — When shall we leave for China?
          — We won’t          we have visited all the places of interest here.
          A．untilB．whileC．a(chǎn)sD．since
          

			
          

			
          
			查看答案和解析>>		
          
				
		
          
			
          
				科目：初中英語
				來源：
				題型：單選題
			
          

						
          ______ he got ready to leave home, his parents came to his home.
          A．WhileB．AsC．UntilD．If
          

			
          

			
          
			查看答案和解析>>		
          
				
		
          
			
          
				科目：初中英語
				來源：
				題型：單選題
			
          

						
          They can’t go out to work        the heavy rain.
          A．because B．since C．because of D．a(chǎn)s a result 
          

			
          

			
          
			查看答案和解析>>		
          
				
		
          
			
          
				科目：初中英語
				來源：
				題型：單選題
			
          

						
          Boys and girls, __________ you choose to wear, your clothes should be clean.
          A．however B．whatever C．whenever D．wherever 
          

			
          

			
          
			查看答案和解析>>		
          
				
		
          
			
          
				科目：初中英語
				來源：
				題型：單選題
			
          

						
          ________ I’m hungry, _______ I have some food.
          A．Because, so B．So, because C．Because, / D．So, / 
          

			
          

			
          
			查看答案和解析>>		
          
				
		
          
			
          
				科目：初中英語
				來源：
				題型：單選題
			
          

						
          Although he is a little boy,_____he speaks English well.
          A．/B．butC．soD．a(chǎn)nd
          

			
          

			
          
			查看答案和解析>>		
          
				
		
          
			
          
				科目：初中英語
				來源：
				題型：單選題
			
          

						
           - How do you like the concert given by F.L.R.?
           - Exciting, _______ one piece of the music wasn't played quite well.
          A．thoughB．becauseC．soD．And
          

			
          

			
          
			查看答案和解析>>		
          
				
		
          
			
          
				科目：初中英語
				來源：
				題型：單選題
			
          

						
          — _______ do you play computer games?
           —Sometimes.
          A．When B．What time C．How often D．How many 
          

			
          

			
          
			查看答案和解析>>		
          
			
          
	
          
		
          


          同步練習(xí)冊答案