Mary ＿＿ weight ever since she got married so she ＿＿ to eat less and do more exercise until she is as thin as she used to.

A.has gained, had

B.had gained, has

C.has been gaining, has

D.has been gaining, had

答案及解析： C

如果不熟悉有些词汇的搭配，如：gain weight可能误选。