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——This wall of air is an effective answer to the problem and it ____ work.

        ——But it is a question to put such a wall of air around the statue.

A、may  B、must C、should   D、could

“Was his father very strict with him when he was at school?” “Yes. He had never praised him _______ he became one of the top students in his grade.”

A. after   B. unless

C. until   D. when

—Bob, you______ on the phone.

　 —______.

　A. are needed; I'm coming B. are wanted; Coming

　C. are called; I'll come D. are rung up; Thanks

—Mum, is the pair of gloves ______mine?

—Yes. You have to wear another pair.

A. washing          B. have washed

C. having washed    D. being washed

— Will you go to the party?

— Of course I will _____.

A. if invited            B. if having invited

C. if I was invited      D. if I will be invited

In America, _____ car is _____ popular means of transportation.

A. the; a   B. a; the    C. the; the    D. the; /

_____ China’s reform and opening up in late 1978, its quick development has aroused worldwide attention, which has made America anxious about it.

A. When    B. As     C. While     D. Since

I wonder ______ you were doing last night.

A. it was what that      B. what was it that

C. that what it was      D. what it was that

—Your name again, please?________.

 —It’s Bell Green.

A. I didn’t quite catch you     B. I couldn’t quite catch you

C. I don’t hear you           D. It’s your name

Although he is often tired _____ his work, he is never tired _____ his job. In fact, he enjoys it.

A. of…with           B. with…from C. with…of           D. at…with