13. The good news made us ____(feel) very excited.
14. We went to the beach last Sunday, and we had great fun _______(watch) volleyball games.
15. We will finish______ (learn) Unit 15 by April. We can review all the lessons.
16. We really enjoy _______ in groups.
17. _______ questions is a good way to improve English.
18. Most Americans celebrate Thanksgiving Day by ______(have) a big meal at home with their family.
19. My hobby is ________(study) computer science.
20. Everyone should play a part in _____(save) the earth.
21. My mother usually goes ______(shop) on weekends.
22. Look at the sky. Can you see the bird ____(fly) in the sky.
23. Mickey was unlucky and had many problems such as _____(lose) his house or girlfriend, Minnie.