题目内容
用所给词的适当形式填空。
It is interesting ________(read)a book on space travel．
完成句子。
我去过北京三次了。
I ________ ________ ________ Beijing three times．
用所给单词的正确形式填空。
None of them ________(have)an environment like that of the earth．
David has ________ China for five years．
A．
been to
B．
come to
C．
arrived in
D．
been in
在其他的任何一个星系我们还没有发现生命。
We ________ ________ life on ________ ________ planet yet．
句型转换。
The boy is so short that he can't reach the top of the desk．(改为同义句)
①The boy is ________ ________ ________ reach the top of the desk．
②The boy isn't ________ ________ ________ reach the top of the desk．
Now ________ people in the world are suffering from the H1N1 flu．
thousand
thousand of
thousands of
ten thousands
根据括号中所给的汉语写出单词，使句子意思完整正确。
Why has no one ________(交流)with us?
按要求完成句子。
They have been here since 2000．(对画线部分提问)
________ ________ have they been here?
