从方框内选择最佳选项完成对话，有两项多余。
Betty：Hi,Tony．What are you up to?
Tony：I'm making a model of the space station． 1
Betty：It's great!I can't imagine you are so clever．
Tony：Thank you．
Betty： 2
Tony：It's for my space travel homework．
Betty：Oh,I see． 3
Tony：Don't worry．Miss Li wants it next month．You have enough time to finish it．
Betty： 4
Tony：For about three days．
Betty：Is it hard?By the way,how do you know so much about space?
Tony：A little hard,but it is interesting． 5
Betty：May I borrow your book?
Tony：Of course．I'll give it to you tomorrow morning．
1．________
2．________
3．________
4．________
5．________
句型转换。
Jack has been to London．(改为一般疑问句)
________ Jack ________ to London?
I have read ten books so far．(对画线部分提问)
________ ________ books have you read so far?
－Where is he?(根据问句进行回答)
－He ________ ________ to the teachers'office．
He has been to America．(改为否定句)
He ________ ________ to America．
We have already had breakfast．(改为一般疑问句)
________ you had breakfast ________?
用所给动词的正确形式填空。
－________ Chinese people ________(send)astronauts to space recently?
－Not yet．
I ________ just ________(hear)the news．I am very happy．
－________ she ________(write)a letter to her grandma yet?
－No,she ________(write)it this evening．
－________ you ever ________(read)the book Busihess at the Speed of Thought?
－No,I ________(read)it tomorrow．
