This letter is so poorly written that I can hardly ________ what it means．

A．turn out

B．watch out

C．figure out

D．take out

I’ve already told you that I'm going to buy it, ________．

A．however much it costs

B．however does it cost much

C．how much it does cost

D．no matter how it costs

A five-year-old boy can speak two foreign languages, ________ surprises all the people

present．

A．which

B．that

C．who

D．what

Most of the representatives think that on ________ whole the meeting was ________ great success．

A．a; a

B．a;/

C．the; the

D．the; a

Most of the participants ________ to our city for the conference next month come from developing countries．

A．are invited

B．invited

C．inviting

D．to invite

Although medical science ________ control over several dangerous diseases, ________

worries us is that some of them are returning．

A．had achieved; what

B．has achieved; what

C．has achieved; which

D．achieved; that

The Climate of Kunming is much better than ________ of Beijing．

A．what

B．this

C．that

D．it

It's helpful to put children in a situation ________ they can see thenselves differently．

A．that

B．when

C．which

D．where

Stand over there ________ you ll be able to see the picture better．

A．but

B．till

C．and

D．or

I can't guess ________．

A．how old is he

B．how old he is

C．how old he has

D．how old has he