________ the students in this school is about three thousand，and ________ of them are girls．

A．A number of；two third                     B．The number of；two thirds

C．A number of；two thirds                     D．The number of；two third

You'd better ________ your hands to help him when someone is in trouble．

A．put away              B．put out            C．take out                D．put up

--Is Jim playing video games?

--No，he's ________ his homework now．

A．forced to do            B．made do            C．forced doing            D．made doing

All the readers were ________ by the ________ story．

A．moving；moved                        B．moving；moving

C．moved；moved                           D．moved；moving

--I think space ________ is very interesting．

--Really? I hope that I can ________ to the moon one day．

A．fly；flight             B．flying；flight           C．fly；fly              D．flight；fly

--How long has it ________ you to wait for your friend?

--About an hour．I don't know why he keeps me ________ so long．

A．taken；waiting       B．cost；waiting             C．taken；to wait         D．spent；wait

Tom couldn't answer the question．________，he didn't know what the question was!

A．But               B．Although               C．So                 D．What's worse

There are many kinds of toothpaste．He can't decide ________．

A．what to buy             B．which to buy          C．how to do               D．when to do

Miss Zhang speaks so quietly that I can ________ hear her．

A．really             B．easily            C．nearly                 D．hardly

--How long have you ________ the book?

--For a week．

A．borrowed             B．kept              C．lent                 D．bought