Today, people are paying more and more attention to their health, _________ books on keeping healthy extremely hot．

A．to make

B．make

C．making

D．made

Thank you, Jack．Without your constant support, I _________ those hard times．

A．couldn’t have pulled through

B．couldn’t pull through

C．can’t have pulled through

D．can’t pull through

_________ many experts suggest, Green tea should be drunk regularly to improve health．

A．Which

B．Where

C．When

D．As

She got the photos of her son _________ up next to her desk so that she could see them whenever she missed him．

A．to pin

B．pinning

C．being pinned

D．pinned

It remains unknown _________ the peace talk between the two countries is going to lead．

A．where

B．when

C．how

D．why

We’d better take umbrellas－I’m sure it _________ when we arrive in London; it’s always wet there at this time of year．

A．will rain

B．is raining

C．will be raining

D．would rain

Scientists have discovered remarkable evidence showing how the body rebuilds _________ while we sleep．

A．itself

B．ourselves

C．it

D．us

My father _________ away for two months．I want to do something special for him when he comes back next week．

A．will be

B．has been

C．was

D．had been

_________ I noticed the puzzled look on his face, I realized that he didn’t understand me．

A．Although

B．When

C．Unless

D．Until

Some people create jobs, foster(滋生)excitement and basically make the system work．They see possibilities _________ others see only problems．

A．that

B．what

C．which

D．where