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        1. We teachers should ______ students ______ us questions in class.
          A.be allowed, to askB.let, to askC.encourage, to askD.a(chǎn)llow, ask
          C
                      
          試題分析: 句意:我們老師們應該鼓勵學生們在課堂上提問題。Be allowed被允許,let讓,encourage鼓勵,allow允許。根據(jù)語境是鼓勵學生,encourage后接帶to不定式,故答案選C.
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