When Jim’s mother came in, he _______ his homework.A. is doingB. has doneC. was doing
—What do you usually use your computer ________? —I usually use it to search for information.
—Must I leave for the meeting now? —No, you ________. There’s much time before the meeting.
Mr. Smith was ________ UNICEF officer. He came to the village and changed the poor girl’s life.
The dining hall isto hold 300 people.
Can I some money you?