4. The math problem is very easy. It        (simple) took me one or

two minutes to work it out.

3. It seems strange        (go) to a zoo when it's dark.

2. I think summer is the best time        (go) camping.

1. Beidaihe is a        (wonder) place to take a holiday in summer.

5. My hometown is in the        (东南) of Hcnan Province.

4. My favorite season is        (春天) .

3.      (印度的) food is really good in Singapore.

2. We should try our best to protect our        (环境).

1. It's        (黑暗的) in the room. Please turn on the light.

12. hear of