We consider ____ absolutelynecessary that we should open our door to the outside world

I was nervous but pretended not __________, in order to leave a nice first impression on the interviewer.

Mike Miller is such a quiet student that he kept silent most of the time and ______ talked to his classmates in the school.

prices have been going up, so thatthe richer you get, the less rich you are than ________ you think you ought tobe.

The teacher asked us to learn all these verb forms __ heart.