-Has Tommy finished his homework yet??

-I have no idea； he ____ it this morning.

　 A. was doing 　 B. had been doing C. has done 　 D. did

--Has he passed the exam yet?  ---No,He ___ it if he had studied harder.

A. would pass   B. passed    C. should has passed   D. would have passed

--Has he passed the exam yet?  ---No,He ___ it if he had studied harder.

A. would pass   B. passed    C. should has passed   D. would have passed

—Has Sam finished his homework??

—I have no idea. He _____ it this morning.?

A.did?

B.has done?

C.was doing?

D.had done?

Has she had a cold like pig flu. _____?  for she is absent.

   A.if anything          B. or anything         C.for anything        D.anything but