39、1. The students are in the classroom now. (改為否定句)

The students             in the classroom now.

2. I went to bed at eleven last night.(對劃線部分提問)

                                        you go to bed last night?

3. They spent several years building this railway. (改寫句子,句意不變)

                                        several years to build this railway

4. Do you know my address?” Tom asked me.(改為復合句,句意不變)

Tom asked me                                                address.

5. Does this teacher often make the students copy the new words fifty times? (改為被動語態(tài))

              the students often                       copy the new words fifty times?

6. We can’t solve this problem even though we try our best. (改寫句子,句意不變)

We won’t                to solve this problem                            hard we try.