When he saw a wallet on the playground , he at once .
A. picked it up B. gave it up. C. picked up it.
—Your brother is an excellent basketball player.
—So he is. He_____ to play basketball three years ago.
A. has started
B. starts
C. started
—I am afraid that I can’t finish the task successfully.
—Don’t worry. You_____ plenty of time to do it.
A. will be given
B. give
C. will give
I won’t go to tomorrow’s party_____ I am invited.
A. if B. unless C. When
—It is getting cold. Would you mind_____ the window?
—Of course not.
A. closing B. to close C. closed
—Who’s singing in the garden?
—It _____be Mr. Brown. He always practices singing at this time.
A. must B. can’t C. need