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				19．A．when          B．because        C．if             D．though			【查看更多】
			


		
           
          


		
          
		
          題目列表(包括答案和解析)
          

		
		
          

          


          
	
          				
          
									
          The red suitcase is expensive ______it’s made of leather.
            
          A．when         B．if             C．because          D．though
          

			
          
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          Our math teacher is very kind ______ he looks very
serious.
          


          A．because          B．though            C．if                D．when
          


           
          

			
          
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          Jack spends much money on books ________ he is not so
rich.
          


          A．though           B．when             C．if                D．because
          


           
          

			
          
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          The red suitcase is expensive _________ it's made of leather.
          

          [　　]
          


          

          

          A．when
          		


          B．if
          		


          C．because
          		


          D．though
          		

          

          

          

          

			
          
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          The red suitcase is expensive ________ it's made of leather．
          

          

          [　　]
          

          A．when
          

          

          B．if
          

          

          C．because
          

          

          D．though
          

          

          

			
          
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