1．They, together with Tom , _______ going to swim this afternoon .(be)  
2．No one but your parents  _______ there then .(be)  
3．He, like you and your brother, ________ very clever. (be)
4．The teacher, including his students, _______ going to see Professor Tell. (be)
5．Mary, together with his sisters ________ gone back. (have) 
6．He and I _______ both students of this school. (be)
7．Both parties _______ their own advantages. (have)
8．Her job _______ something to do with computers. (have)
9．They _______ not come yet. (have)
10．There _______ a desk in the room.  (be)
11．There _______ no chairs in it.  (be)

二、单句改错

1．Physics are a very interesting subject.
2．His family was all music lovers.
3．The pair of shoes are worn out. 
4．Half of the students has finished their composition.
5．The number of students in you are 50.
6．The cattle is eating grass on the hill. 
7．A knife and fork are used to have meals.