--Isn’t Jim back yet?

--No, but I think he ________ in half an hour.

1. A.
   returned
2. B.
   will return
3. C.
   has returned
4. D.
   returns

?Isn't Jim back yet?

?No, but I think he ________ in half an hour.

A. returned

B. will return

C. has returned

D. returns