词形变换 根据句意，用括号中所给单词的正确形式填空，每空一词。
1. There will be more （tree） in the northwest of China.
2. High﹣speed trains are much （fast）than traditional ones.
3. Turn right at the second （cross） and the hotel is on your left.
4. Mr.Green （work） in our school ten years ago.
5. It is （harm） to the environment to kill the wild animals.
I wonder_______________．
Well， I think Qingfeng Lake Park is a good choice．（ ）
A．what I shall sell at my street stall（货摊）
B．whom I could open a street stall with
C．if I can open a street stall after work
D．which is the best place for a street stall
By the end of 2025， garbage﹣sorting systems （垃圾分类系统） will be ________in Dongying．（ ）
A．set upB．given up
C．shut offD．brought out
We should _________to buy products that come from wild animals． A large number of them are in danger．（ ）
A．stopB．decideC．refuseD．continue
We asked 200 students in our school about whether they wanted a younger brother or sister．Here are the results．
It shows that ________percent of them don't want to have one． This is a big problem．（ ）
A．10B．40C．50D．80
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