题目内容

-Mike, let’s prepare for our baseball game.-OK. We’ll lose the game ______ we try our best.

A. unless
B. once
C. after
D. since

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12.Our teacher has_______ Australia for a week.

A. gone to
B. been in
C. arrived

-Mario, your mobile phone is ringing.-Wait a minute. It’s dangerous for us ______it while crossing the street.

A. answering
B. to answer
C. answer
D. answered

In last two years, we _______ twenty songs.

A. were learning
B. had learned
C. have learned

.Thanks___ your help. I have made progress.

A. for
B. of
C. with