–Look! Someone is cutting a tree on the moon.

–It _______ be true, Granny. Our teacher says there is no air there.

A. can't        B. mustn't       C.may          D. should

—Look, someone is coming. Guess who ____________.

—Jack. He’s always on time.

A.can it be          B.it can be    C.can he be        D.he may be

—Look, someone is coming. Guess who ____________.
—Jack. He’s always on time.

—Look, someone is coming. Guess who ____________.

—Jack. He’s always on time.

1. A.
   can it be
2. B.
   it can be
3. C.
   can he be
4. D.
   he may be