8. Mr Liu’s daughter _______ (practise) the piano in Room 301 at 7.30 p.m. yesterday.

7. Britain was the first country in the world _______ (have) a free health system.

6. By the time she was fifteen, Kitty _______ (teach) herself a foreign language.

5. Playing computer games is delightful, but _______ (spend) too much time on it may do harm.

4. He watched the result of the test and then _______ (draw) a conclusion.

3. In 1946, UNICEF _________ (set) up to help children whose lives were changed because of the Second World War.

2. So far, China _______ (develop) about 1360 kinds of green food.

1. If we don’t protect the wetlands, there ________ (be) no chance for us to see these endangered animals in the future.

6. ___________ 7. ___________ 8. ___________ 9. ___________10.___________

1. ___________ 2. ___________ 3. ___________ 4. ___________ 5. ___________