Come and see me whenever ________．

A．you are convenient

B．you will be convenient

C．it is convenient

D．it will be convenient to you

It will be a long time ________ Frank ________ back from abroad．

A．before; comes

B．since; has come

C．when; will come

D．after; came

－Hi, Tracy, you look tired．

－I am tired．I ________ the living room all day．

A．painted

B．had painted

C．have been painting

D．have painted

It ________ long before we ________ the result of the experiment．

A．will not; be will know

B．is will; know

C．will not; be know

D．is; know

－What were you up to when she dropped in?

－I ________ for a while and ________ some reading．

A．was playing; was going to do

B．played; did

C．had played; was going to do

D．had played; did

－What happened to the postman?

－I don’t know．He ________ around here for a long time．

A．hasn’t seen

B．didn’t see

C．wasn’t seen

D．hasn’t been seen

－You’ve agreed to go, but why aren’t you getting ready?

－But I ________ that you ________ me to start at once．

A．don’t realize; want

B．don’t realize; wanted

C．didn’t realize; wanted

D．haven’t realized; want

－You’ve left the light on．

－Oh, so I have．________ and turn it off．

A．I’ll go

B．I’ve gone

C．I go

D．I’m going

His uncle ________ for more than 9 years．

A．has come here

B．has started to work

C．has lived there

D．has left the university

________ has Mr White been a member of Greener China since he ________ to China?

A．How soon, comes

B．How often, got

C．How long, came

D．How far, arrived