题目内容

______for his help, we couldnt have overcome the difficulties.

A. Weren"t it
B. Hadn"t it been
C. Had it not been
D. Without it

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This is the house______we wrote to you.

A. that
B. which
C. about that
D. about which

【C9】

A. ever since
B. no wonder
C. in all
D. so far

【C20】

A. behind
B. after
C. away
D. apart

【C17】

A. conventional
B. common
C. general
D. normal