Because of too many differences between the two sides, a lot of questions are still left ________.
A in the air B on the air C by the air D through the air
– I met Jackson at our school theatre. Can you imagine_____ well-known _____ an expert on ENT?
| A．his becoming; as | B．to become; as | C．his becoming; for | D．to become; for |
Surely Mr. Peterson ____ have forgotten to buy presents for his beloved family members. After all, it was Christmas!
| A．shouldn’t | B．mustn’t | C．can’t | D．needn’t |
Large quantities of water, as well as some other timely help including a medical team ___since the serious drought hit Yunnan Province.
| A．has offered | B．had been offered |
| C．have been offered | D．is offered |
Food safety issues, ____ will seriously affect the growth of teenagers and even the nation’s future.
| A．if not solved properly |
| B．not if solved properly |
| C．if solved properly |
| D．not if properly solved |
It is uncertain ___ side effects these weight-loss drugs will bring about, although hundreds of thousands of patients have taken it.
| A．that | B．whether | C．how | D．what |