I don’t remember when and where I _________ this umbrella.
| A．buy | B．have bought |
| C．will buy | D．bought |
we were quite tired, we still went on working.
A．Because; / B．Although; but C．Although; /
—I’ll return the book to Mary, but I can’t find her anywhere.
—She the teachers’ office. You can find her there.
A．have gone to B．has gone to C．has been to
—Forests are very important, aren’t they?
—Yes. They can prevent the water washing the earth away.
A．for B．to C．from
—Fruit juice can be to Children’s teeth.
—I agree with you. Children shouldn’t drink too much.
A．useful B．deaf C．harmful
Not only the students but also the teacher interested in this activity.
A．am B．is C．are