21.Our ______ problem was lack of time to review the details of our plan. A. principal B. bare C. hardly D. identical 22.He carefully _________ the key in the lock and opened the door. A. proceeded B. endured C. provoked D. inserted 23. My father’s words will always strongly____ my mind. A. be impressed upon B. impress upon C. impress D. be impressed in 24. Hi, don’t snap ____ me, I have done nothing wrong. A. x B. at C. to D. on 25. Right now, some students do part-time jobs, like____ flyers on the street for some companies. A. passing on B. passing out C. passing by D. passing away
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