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2. Climbing to the mountain top is tiring, but it is _______ it.
4. People who drink ________ water get sick and weak.
9. You'd better bring the _______ with you if you want to go hiking.
12. The prince finally got his ________ by killing the evil witch.
13. She asked me to ______ her some good places to eat.
16. The artist looked at his own work with ______. He thought his new painting was good enough.
17. A person will improve a lot only when he faces his weakness and _______s his own mistakes.
18. To get a better protection, people have to get at least two ________s.

1. She felt ________ for those poor kids, so she donated some money.
3. The scientists are going to go on an Amazon ______ to study the wildlife there.
5. Students are ______ to use a calculator in this class.
6. The experienced mechanic is teaching his ______ how to repair cars.
7. We've got some ________ complaints from our customers. They complained that the price is too low and the packaging is too good.
8. Doctors and nurses have to put on the ________ clothing before they take care of the patients with Covid-19.
10. The hotel offers free breakfast ________ for its guests.
11. The man uses an electric razor to ________ his beard.
14. The technology is ______ changing to make life easier.
15. Some mosquitoes spread __________, a disease that is common in hot countries.
16. Most people visit Hualien because of the beautiful ______ there.
19. The young lady moved back to her hometown to take care of her ______ parents.