When the teacher came in, the students ______ about the film
English is very important. You are supposed it well.A. learned B. learning C. to learn
— You get up so late in the morning.— Thank you. I’ll follow your advice.A. oughtn’t to B. ought to C. don’t
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