Question

---- How long was it ______ you finally reached your goal of becoming a doctor?
---- Five years.

A．before

B．since

C．when

D．until

Answer 1

A

試題分析：本題實際上考察的是固定句式：固定句式：It /That/This is the...time that sb have done sth；It /That/This was the...time that sb had done sth。“這是某人第幾次做某事的時候了”；結合日常生活實際，能夠計算到這是第幾次做某事，表明該動作已經(jīng)發(fā)生，因此，要用完成時態(tài)——主句用現(xiàn)在時，從句用現(xiàn)在完成時；主句用過去時，從句用過去完成時。只不過本句是一個特殊疑問句，對其中的一段時間進行提問。句義：多久以后你才實現(xiàn)你做醫(yī)生的目標？—5年。故A正確。