In addition to his traditional medical treatment, he tried to put himself in situations ________ would bring about positive emotions．

A．which

B．where

C．why

D．as

Eating properly and exercising ________ make one enjoy a longer and healthier life．

A．normally

B．generally

C．regularly

D．directly

It is almost five years ________ we saw each other last time．

A．before

B．since

C．after

D．when

The teacher asked us ________ so much noise．

A．don't make

B．not to make

C．not make

D．not making

Please pass me the dictionary ________ cover is black．

A．which

B．which of

C．its

D．whose

It is the best TV play ________ I’ve seen．

A．that

B．which

C．since

D．and

It was ________ back home after the experiment．

A．not until midnight did he go

B．until midnight that he didn't go

C．not until midnight that he went

D．until midnight when he didn't go

I like getting up very early in summer．The morning air is so good ________．

A．to be breathed

B．to breathe

C．breathing

D．being breathed

They reached home at last, ________ and hungry．

A．was tired

B．tired

C．tiring

D．tiredly

Though ________ money, his parents managed to send him to university．

A．lacked

B．lacking of

C．lacking

D．lacked in