一You’ve made great progress in your survey, haven’t you?——Yes,but some problems among the youngsters still remain——.
The man we followed suddenly stopped and looked as if ________ whether he was going in the right direction.
—Hi,Mary.Would you like to go to the concert this evening? —Sorry,Tom.________ tomorrow's lessons,I have no time to go out with you.
Every student in our class had an application form in his hand,but no one knew which office ________.
—O'Neal works hard. —So he does.He is often seen ________ heavily before his teammates have even arrived at practice.
—How did you get in touch with Mrs.Green? —Well,it seems to me that you've forgotten ________ me her telephone number the other day.