Farmers in China began to use tractors _______ cattle for farming work.
A. to take place B. to take place of
C. to in place of D. to take the place of
I wonder if it is_________ for you to pick me up on your way home this afternoon.
A. legal B. convenient
C. enjoyable D. comfortable
The young man acted strangely during the interview. He made a bad ________on the employer.
A．opinion B．expression
C．experience D．impression
He asked us to _______ him in carrying through the plan at the meeting yesterday.
A. persuade B. encourage
C. assist D. provide
Today, we’ll discuss a number of cases _______ parents have much difficulty in communicating with their children.
A. where B. as C. why D. which
He failed the mid-term examination and only then _______ how much time he had wasted.
A. had he realized B. did he realize
C. he had realized D. he realized
