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_ he _ to the teacher very carefully?
2. Anna and Tom are good at Chinese. (改为同义句)
_ Anna _ Tom are good at Chinese.
3. They have planted thousands of trees these years. (对划线部分提问)
_ trees have they planted these years?
4. This TV play is meaningful ,but that one is not. (合并为一个句子)
This TV play is _ _ than that one.
5. David plays basketball better than any other boy in his class. (改为同义句)
David plays basketball _ _ in his class.
Forests help to keep water from running away，so drought（干旱）doesn’t often happen．Chinese people have built a“Great Wall”of trees，millions of trees across the northern part of the country．
The Great Green Wall 1 ________ （be）7,000 kilometres long，and it will stop the wind from 2 ________（blow）the earth away．It 3 ________already ________（save）a lot of land．
Wang Feng is a worker at Yulin in Shanxi Province．He 4 ________ （work）on the Great Green Wall with many other people．We 5 ________ （visit）him at his workplace and when we saw him he 6 ________ （work）among the trees．He told us something about his work“We must 7 ________ （plant）many thousands of trees every year，”he said“You see all those small trees over there on that hill? That was sand five years ago．Now it's a young forest! In a few years’ time，we 8 ________（cover）those mountains with trees，too!”He pointed to the high mountains far away．
Was it difficult 9 ________ （work）on the Great Green Wall?
Yes，It’s hard work．but it's very important．The only problem is we have to 10 ________（grow）our own food．But thanks to the Great Green Wall，the land produces more crops．So the more trees there are，the better harvest we have．”
查看习题详情和答案>>B. plant
C. planting
D. planted