— Peter, where did you guys go for the summer vacation?

— We________ busy with our work for months, so we went to the beach to relax ourselves. [ ]

A. were  

B. have been  

C. had been  

D. will be

中医治疗麻痹性斜视时认为配合以下哪些方法治疗，不但可以缩短疗程，而且可以提高疗效（）。

A.外治

B.气功

C.食疗

D.内治

E.针刺