【题目】He used to drink too much wine. （改为否定句）

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

【题目】We are doing a________（调查）about the health problem.

【题目】I have taken part in an________（环境的）project since last year.

【题目】The table is made of________（金属）.

【题目】We can go to the biggest________（宫殿）to sing a song.

【题目】Parents should be________（负责）for their children's studies.

【题目】我想知道这些疾病是否和空气污染有关。

【题目】除非你控制好情绪，否则我们不能执行这项计划。

【题目】这个所谓的新系统这么容易受侵入，很快彻底瘫痪了。