Ⅰ.单句语法填空
1．You're supposed to take (take) them off before you enter it.
2．You may do these exercises either in class or after class.
3．Her astonished (astonish) expression suggested that she hadn't expected that result.
4．Neither you nor I, nor anyone else is (be) knowing the answer.
5．I have learnt (learn) 2,000 English words during the last three years.
6．She used to live (live) in town but she finds herself used to living (live) in the country.
7．We usually take turns to do (do) the cleaning, and today it is my turn.
8．We are proud of all her hard work and success.
9．Jack, can you see something red floating (float) in the distance on the water?
10．People should balance the development in economy against the damage to earth.
