一、给下列单词添加合适的前缀，使新词与原词词义相反
1. correct
2. tidy
3. usual
4. possible
5. patient
6. healthy
7. active
8. happy

1. incorrect 2. untidy
3. unusual 4. impossible
5. impatient 6. unhealthy
7. inactive 8. unhappy

二、根据句意，用括号中所给形容词的正确形式填空
1. Tom had a(n) (lucky) day because he lost his wallet on his way to work.
2. He knows little English and he can only say some (complete) sentences.
3. It is (polite) to ask someone’s age and marriage when you meet for the first time.
4. Today’s talk was (interesting). I felt bored and nearly fell asleep.
5. The work of art is (perfect), but that’s why it is unique (唯一的).
6. The new neighbour seems a bit (friendly). He never greets others.

1. unlucky 2. incomplete
3. impolite 4. uninteresting
5. imperfect 6. unfriendly

三、根据语篇，从方框中选择合适的单词并用其正确形式填空
able possible sure expensive correct
Last Sunday, I got the crazy idea of making crème brûlée (焦糖布丁) by myself at home, thinking it would be simple and fun.
I didn’t have much money, so I went to the supermarket and picked up some (1) materials, such as milk, eggs and sugar. I got started after watching a few teaching videos online.
Things quickly went wrong because I was (2) how much sugar to add. Then, I put in a(n) (3) amount. Later I realized the mistake made my crème brûlée too sweet.
When I heated the milk, I answered a phone call. By the time I got back to the stove, the milk had a burnt smell. It was (4) for the dish to taste good. I had to start over again.
Also, I set the wrong temperature when putting the mixture into the oven to bake, so the texture (口感) was not that smooth at last.
Even though I was (5) to make a perfect dessert this time, I learnt a lot. Next time, I will be more careful and follow the instructions step by step.

1. inexpensive 2. unsure
3. incorrect 4. impossible
5. unable