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.
