It is usually warm in my hometown in March, but it _____ be rather cold sometime.
| A．must | B．can | C．should | D．would |
Although medical science __________ control over several diseases,what worries us is that some of them are returning.
| A．achieved | B．has achieved | C．will achieve | D．had achieved |
---What happened to the house ?
---It_____burnt to the ground.
A is said to having been B. is supposed to have been
C is reported to have been D. is believed to have
---You must obey every word of mine!
---_______ I don’t?
| A．How if | B．What if | C．Even if | D．Only if |
How long do you think it will be _______ China sends another manned spaceship to the moon?
| A．when | B．until | C．that | D．before |
---________by the chemistry teacher for not finishing homework independently makes him feel very shameful.
---Yes. But he told me this morning he would spare no efforts to be the top one in our class.
| A．Scolded | B．Having scolded |
| C．Being scolded | D．After being scolded |