15. —Why is Mr. Li so happy this morning?
—Because he was honored with a(n) ____ for excellence in teaching.
| A．present | B．gift | C．award | D．Reward |
---- They like going to sleep early, don’t they?
---- Yes. They are accustomed ___________ very late.
| A．to stay up | B．to not stay up |
| C．to staying up | D．to not staying up |
— Believe it or not, my sister and I are twins.
— Oh, you must have had the case _________ you were taken for your sister.
| A．which | B．whose | C．where | D．when |
Last year the number of students who graduated with a driving license reached 200,000, a(n) ________ of 40,000 per year.
| A．amount of | B．quantity |
| C．average | D．number |
____today, he would get there by Friday.
| A．Would he leave | B．Was he leaving |
| C．Were he to leave | D．If he leave |
---- Is everyone here?
----Not yet. Look, there _______ the rest of our guests.
| A．come | B．comes |
| C．is coming | D．are coming |