With many cities in China dreadfully blanketed by thick haze, the environmental problem is _____ Chinese people concern most nowadays.
| A．what | B．which | C．where | D．when |
It is spring now. The flowerssweet in the botanic garden attract the visitors to the beauty of nature.
| A．to smell | B．smelling |
| C．smelt | D．to be smelt |
E-mail, as well as telephones, an important part in daily communication.
| A．is playing | B．have played |
| C．was playing | D．play |
Jane is ill and Annie is going to _______ this week.
| A．take place | B．take her place |
| C．take the place | D．be replaced |
If Penicillin had not been available, many people _______ from sickness or even small wounds.
| A．had died | B．have died |
| C．would have died | D．should have died |
_______strong evidence ______reading is beneficial to one’s success.
| A．It is；what | B．It is；that |
| C．There is；which | D．There is；that |