If we do not deal with ________ problem caused by air pollution, our planet may no longer be ________ healthy place for us.
| A．a; the | B．a; a |
| C．the; a | D．the; the |
He said he had seen that film ___.
| A．yesterday | B．the next day | C．the following day | D．the day before |
We asked him not to stay here___.
| A．no longer | B．any longer | C．no more | D．more than |
We went to see him off at the airport and soon the plane ___.
| A．was disappeared | B．would have disappeared | C．disappeared | D．was being disappeared |
“What a pity! Two thirds of the apples I’ve just bought are ___.” He said.
| A．rotting | B．rotted | C．rotten | D．roted |
----Who’s the man sitting under the tree? ----I don't ___ this man, but I’ve ___ him.
| A．know of, heard about | B．know, heard about | C．know, heard | D．know of, heard |