My brother the army for 5 years.
A. joined B. has joined C. has been in
We are now short fresh water. Something must be done to prevent people polluting it.
A. of；from B. for；from C. of；to
About 35% of the rubbish in HongKong can be recycled every year the rest can’t.
A. then B. while C. since
- of Class 1 students is in the classroom.
-They are having a P.E. lesson on the playground.
A. All B. None C. Neither.
— I have never visited a paper factory.
— .
A. So have I B. I haven’t now C. Neither have I
He’s read this book before， ?
A. hasn’t he B. doesn’t he C. isn’t.
