1. She can 70 words a minute.
2. If any problem should , please let me know.
3. The train must stop when the is red.
4. The sudden of a policeman caused the thief to run away.
5. The price of products has gone down recently.
6. She resembles(相似)her sister in appearance but not in .
7. She offered to the child.
8. Be careful. She is very difficult to .
