I think China a much stronger and more beautiful country in 2050.A. becomeB. will becomeC

问题补充：

I think China a much stronger and more beautiful country in 2050.

A. become

B. will become

C. becomes

D. became

答案：

A. become

(答案→)B. will become

C. becomes

D. became

解析：本题考查时态。In 2050表示将来的时间，故其谓语动词要用将来时。句意：我认为在2050中国将变得更加强壮和更加美丽的国家。