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Directions: Beneath each of the following sentences there are four choices markedA, B, C

题目

Directions: Beneath each of the following sentences there are four choices markedA,

B, C and D. Choose the one answer that best completes the sentence.

Example:

The wild flowers looked like a soft orange blanket the desert.

A. covering B. covered C. cover D. to cover

The answer is A.

21. Listen! Do you hear someone for help?

A. calling

B. call

C. to call

D. called

参考答案
正确答案:A