被动语态的构成和用法
I.选择正确的答案填空。
( )1. Alice was seen ________ downstairs a moment ago.
A. come and go to B. come and go C. to come and go to D. to come and go
( )2. Old people should _______ politely. Do you think so?
A. be spoken B. speak C. be spoken to D. speak to
( )3. This song ______ often ______ by children. How do their parents like this?
A. is, singing B. is, sung C. has, sung D. has, singing
( )4. This dictionary is _______ worth _______. And I want to buy one.
A. very, buying B. well, to buy C. well, buying D. very, to buy
( )5. Danny, you can go out to play after your homework _________.
A. will be finished B. will finish C. is finished D. has finished
