【題目】He used to drink too much wine. （改為否定句）

【題目】I can't________（買得起）to buy the car, because I don't have enough money.

【題目】We are doing a________（調查）about the health problem.

【題目】I have taken part in an________（環(huán)境的）project since last year.

【題目】The table is made of________（金屬）.

【題目】We can go to the biggest________（宮殿）to sing a song.

【題目】Parents should be________（負責）for their children's studies.

【題目】我想知道這些疾病是否和空氣污染有關。

【題目】除非你控制好情緒，否則我們不能執(zhí)行這項計劃。

【題目】這個所謂的新系統(tǒng)這么容易受侵入，很快徹底癱瘓了。