Don't respond to any email ________ personal information, no matter how official they look．

A．searching

B．asking

C．requesting

D．questioning

Someone who lacks staying power and perseverance is unlikely to ________ a good researcher．

A．make

B．turn

C．get

D．grow

－Michael was late for Mr．Smith' s oral class this morning．

－________?As far as I know, he never came late to class．

A．How come

B．So what

C．Why not

D．What for

－Andrew won't like it, you know．

－________?I don't care what Andrew thinks!

A．So what

B．So where

C．So why

D．So how

－Do you think I could borrow your bicycle?

－________

A．How come?

B．Take your time．

C．Yes, go on．

D．Yes, help yourself．

It was not until she got home ________ Jennifer realized she had lost her keys．

A．when

B．that

C．where

D．before

－How long do you think it will be ________ China sends a manned spaceship to the moon?

－Perhaps two or three years．

A．when

B．until

C．that

D．before

－________ that he managed to get the information?

－Oh, a friend of his helped him．

A．Where was it

B．What was it

C．How was it

D．Why was it

－Did Jack come back early last night?

－Yes．It was not yet eight o'clock ________ he arrived home．

A．before

B．when

C．that

D．until

She ________ Japanese when she was in Japan．Now she can speak it freely．

A．picked out

B．made out

C．made up

D．picked up