As we all know, , the pollution will get worse and worse.
| A．not if carefully dealt with |
| B．until not carefully dealt with |
| C．if not carefully dealt with |
| D．when not carefully dealt with |
Generally speaking， ______ according to the directions，the drug has no side effect．
| A．when taking | B．when taken | C．when to take | D．when to be taker |
--The telephone is ringing.
--I _____ answer it.
| A．will | B．am going to | C．am to | D．am about to |
He pretended to be French, but his German accent _______.
| A．gave him up | B．gave him off | C．gave him out | D．gave him away |
We held the graduation ceremony________ the headmaster gave a speech.
| A．with which | B．what | C．which | D．where |
I get up early every morning. The fresh air is so good_____________.
| A．to be breathed | B．to breath | C．breathing | D．being breathed |