We had better to check the whole system before sending for the technician. A. to check            B. whole                C. before                D. the technician

Mark the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.

We had better to check the whole system before sending for the technician.

A. to check  
B. whole    
C. before 
D. the technician

Trả lời

Chọn đáp án A

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