12. He gave us some ________(建议) on how to learn English.
11. The camel is a ________(有用的) animal.
10. People look at each other in ________(恐惧).
9. This flower ________(闻起来) good.
8. The patient isn’t out of ________(危险).
7. They found it hard to ________(决定) whether to go swimming or not.
6. We can be sure that he is ________(诚实的).
5. He feels ________(紧张不安) because he will take an English exam tomorrow.
4. It’s his duty to solve the ________(问题).
3. The Class 2 runner ________(使落下) his stick on ground.