1 . With time going by, we have come to realize that creativity is       it takes to keep a nation highly competitive.

A．what	B．how
C．why	D．that

2 . I’m afraid he’s more of a talker than a doer, which is ________he never finishes anything.

A．that	B．when
C．where	D．why

3 . —You see，I’m poor in maths，you are not good at English，and...
—That’s________we should help each other.

A．when

B．where

C．how

D．what

4 . Why not try your luck downtown, Bob? That’s __________the best jobs are.

A．where

B．what

C．when

D．why

5 . —— I dropped in on you at about four, p.m., but you didn’t answer the door.
—— Oh, that was probably _________ I was playing badminton in the stadium nearby.

A．that

B．what

C．when

D．why

6 . Now the question that you must carefully consider is ____ can be put into practice.

A．how you have learned

B．how what you have learned

C．that why you have learned

D．how that you have learned

7 . The world is a book，and those who don’t travel read only one page．That’s____I’ll go on a tour this summer．

A．how

B．why

C．when

D．Where

8 . A selfie stick is_____ enables users to position their smartphones to get better photo angles

A．that

B．how

C．what

D．who

9 . Almost everyone has his own strengths and weaknesses. It is           others are weak that maybe you have a great advantage.

A．as

B．where

C．that

D．what

10 . Although he has become wealthy, Mr. Wood remains _________ he used to be ,modest and friendly .

A．which

B．where

C．what

D．that