You will have to stay at home all day ______ you finish all your homework.
| A．if | B．unless | C．whether | D．because |
．When he goes out, he often wears sunglasses _______nobody can recognize him．
| A．so that | B．now that | C．in case | D．as though |
The desks in our classroom are so close together that there is not enough room to move them．
| A．between | B．in | C．across | D．over |
_______ travelling expenses rising a lot, we had to change all our plans for the tour．
| A．As | B．By | C．Since | D．With |
Professor Wang ________in our school till next Sunday．
| A．will have stayed | B．has stayed | C．is staying | D．stayed |
—I’m going to order chicken and salad．What about you?
—.I’ll have the same.
| A．I’m afraid not | B．It’s up to you |
| C．That sounds good to me． | D．That depends |