AIDS control and prevention is a to China as well as the whole world.
The old farmer, _____ the badly injured and burnt soldier, came out of the burning farmhouse, calling continuously for help.
To answer correctly is more important than _____.
And there, almost _____ in the big chair, sat her little brother, who never had to be told to keep quiet.
I thought Jim would say something about his school report, but he ______ it.
It is when the plane ______ that you’d better find out at the booking office.