427.（10-11，山西省山大附中高二上第一次月考）一I’m sure Andrew will win the first prize in the final．
一I think so．He ．for it for months
A．is preparing B．was preparing C．has been preparing D．had been preparing
428.（10-11，浙江菱湖中学高二10月月考） By the end of last year, another new gymnasium ________ in Beijing.
A. would be completed B. was being completed C. has been completed D. had been completed
