Question

—What did Jack ask you just now?
—He wanted to know how long _________ when I reached the cinema.

A．had the film been on	B．the film had started
C．the film had lasted	D．had the film ended

Answer 1

C

考查賓語從句和現在完成時。know后是一個賓語從句，用陳述句語序，排除A、D；how long指的是一段時間，start是短暫性動詞，不能和一段時間連用；last“持續”，是延續性動詞，可與一段時間連用。故選C。