There are over 58,000 rocky objects in ______space, about 900 of which could fall down onto______ earth.
| A．the ; the | B．the ; / | C．/ ; the | D．a ; the |
Yesterday I met a(n) _____ teacher by chance who taught me English in the university three years ago.
| A．early | B．former | C．first | D．advanced |
The Dragon Tower，from ________ top visitors can enjoy a good ________ of Harbin，attracts hundreds of tourists every day.
| A．which；sight | B．whose；view | C．its；view | D．where；sight |
He promised me if we_______ the game, he ________us a round of drink.
| A．win; will buy | B．would win; would buy |
| C．won; bought | D．won; would buy |
By next summer John _____in this factory for thirteen years.
| A．has been working | B．will have been working |
| C．will be working | D．has worked |
Tom sat under a tree and seeing his friend, _____ up in no time.
| A．to stand | B．standing | C．stood | D．would stand |