小题1: Alice does the shopping on Sundays. (改为否定句)

Alice             the shopping on Sundays.

小题2: He spent a whole morning cleaning the room. (就划线部分提问)

                      he      cleaning the room?

小题3: "Did you sleep well last night?"David asked her. (改为复合句，句意不变)

David asked  her                        well  last night.

小题4:  The foreigners want to know how they can learn Chinese Kongfu well. (改写句子，句意不变)

The foreigners want to know               learn Chinese Kongfu well.

小题5: There were not any telephone calls made in English between the two countries years ago. (改写句子，句意不变)

              the telephone calls               in English      the two countries years ago.

小题6: Before talking, he told me his name and I told him my name, (改写句子，句意不变)

We                                before talking.

扩散器的作用是将（）的一部分转变为静压，减少（），提高通风机效率。