These achievements_______ without the contribution of Qian Xuesen, a key leader of the New China's nuclear, missile and so on．
| A．would have been unthinkable | B．would not be unthinkable |
| C．would be unthinkable | D．would not have been unthinkable |
Doing your homework is a sure way to improve yor test scores, and this is especially true ____ it comes to classroom tests.
| A．before | B．since | C．when | D．after |
I haven' t seen Mary these past few days. I m afraid she ____ herself for some time.
| A．isn't feeling | B．hasn' t been feeling |
| C．hadn't been feeling | D．wasn't feeling |
Not far from the club, there was a girden, ____ owner seated in it playing bridge with his children every afternoon.
| A．whose | B．its | C．which | D．that |
____ the youth ____ the rising sun at 8 or 9 o'clock am, Mao Zedong expressed his great hope for the young men.
| A．Comparing; with | B．Compared; to | C．Compared; with | D．Comparing; to |
---Whose advice do you think I should take?
---_______.
| A．You speak | B．That's it | C．It's up to you | D．You got it |