(   )1.—Where are Maria and Kangkang?

—They _____ England.

A.have been to              B.are away            C.have gone to              D.had been in

(   )2._____ the Great Green Wall, the land produces (Éú²ú³ö) more crops.

A.Thanks for                B.Thanks to           C.Thank to                   D.Thank for

(   )3.I think that you have made so rapid _____ in math.

A.a progress                 B.progress             C.progresses                 D.progressed