高中英语主语从句综合试题

It worried her a bit ________her hair was turning gray.

A．while	B．if
C．that	D．for

It remains to be seen________North Korea will remain stable under its new young leader.

A．when	B．whether
C．why	D．That

The limits of a person’s intelligence, generally speaking ,are fixed at birth, but       he reaches these limits will depend on his environment.

A．where

B．whether

C．that

D．why

______ some teenagers don’t realize is ________ difficult life can be after they get addicted to drugs.

A．What; how

B．That; how

C．That; what

D．What; what a

______ is reported in the newspaper is that seventeen climbers have been killed in the snow tsunami.

A．It

B．As

C．What

D．That

_____ we can’t get seems better than _____ we have.

A．What, what

B．What, that

C．That, that

D．That, what

___ we have overlooked, however, is that there is no one answer to this question．

A．Which

B．That

C．Where

D．What

（）the delayed flight will take off depends much on the weather.

A．

Why

B．

When

C．

That

D．

What

I think _______ impresses me about his painting is the colours he uses.

A．what

B．that

C．which

D．who

Exactly______ the potato was introduced into Europe is uncertain, but it was probably around 1565.

A．whether

B．why

C．when

D．how

_____ I cannot understand is _____ she wants to resign her present job.

A．What; why

B．Which; how

C．That; why

D．What; which

---Tell me something about your adventure in the rainforest, please.
---We lost our way in the forest and ___ made matters worse was ___ night began to fall.

A．what; that

B．it; that

C．it; because

D．what; because

7．Perhaps it will never be known __________ he did with those materials on the incident．

A．that

B．what

C．which

D．how

It is by no means clear       the president can do to end the strike.

A．how	B．which
C．that	D．what

It suddenly occurred to him       he had left his keys in the office.

A．whether

B．where

C．which

D．that