The _______ boy made the police and his family _______.

A．gone; puzzled      B．missing; puzzled     C．missing;puzzling     D．lost; puzzling

Liu Xiang is believed _____ over $ 20 million in advertisements last year alone.

A．to earn           B．have earned       C．to have earned     D．having earned

Mark was a student at this university from 2006 to 2011，________he studied very hard and was made Chairman of the Students’ Union.

A．during which time   B．for which time      C．during whose time   D．by that time

The research group ____________ 15 members has made great achievements in recent years.

A．is made up of      B．makes up          C．made up of        D．making up of

While our manager is away on business, our company will be _______Mr Zhang.

A．in the charge of     B．in charge of        C．taken charge of     D．taking the charge of

I’m afraid I won’t be available then. I _____ a friend off at 3:00 this afternoon.

A．see              B．am seeing         C．will see           D．will be seeing

—When will you come to see me, Dad?

—I will go to see you when you_____ the training course.

A．will have finished   B．will be finishing     C．are finishing       D．finish

Tom sat under a tree and seeing his friend, _____  up in no time.

A．to stand           B．standing           C．stood             D．would stand

By next summer John _____in this factory for thirteen years.

A．has been working                       B．will have been working

C．will be working                         D．has worked

He promised me if we_______ the game, he ________us a round of drink.

A．win; will buy                           B．would win; would buy

C．won; bought                           D．won; would buy