用括號(hào)內(nèi)所給動(dòng)詞的正確形式填空（1’×5）

49. Isn’t it strange that the cat is used to ________(lie) beside the dog peacefully?

50. I believe that an important moment like this should ________( not forget).

51. Turn off the radio,dear. Baby is sleeping.

   There is no need. He ________(wake) up.

52. What is he busy doing?

    Doing the experiment ________(complete) the science project.

53. The project they had devoted up to two years to ________(choose) as the best one at the      conference.

答案解析：

49，lying 考點(diǎn)：固定詞組be used to doing,習(xí)慣于做某事； 動(dòng)詞lie的現(xiàn)在分詞

50，not be forgotten 考點(diǎn)：考察了被動(dòng)語態(tài)

51，has waken  考點(diǎn)：現(xiàn)在完成時(shí)及對(duì)語境判斷

52，to complete 考點(diǎn)：動(dòng)詞不定式表目的

53，was chosen 考點(diǎn)：考察了過去時(shí)和被動(dòng)語態(tài)

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