1 . ________online courses can produce good results remains to be seen．

A．That	B．Whether
C．Who	D．Where

2 . New evidence might lead to the conclusion ______ the young woman is lying.

A．whether

B．if

C．why

D．that

3 . Some irresponsible websites allowed restaurants to post false pictures ________ could mislead customers.

A．who

B．that

C．when

D．where

4 . I was so excited last night that it was a long time _____I got to sleep.

A．that

B．since

C．before

D．when

5 . The Oxford English Dictionary is necessary for learning English, so you'd better buy ___.

A．this

B．that

C．it

D．one

6 . — I don’t know whether I should go abroad or not, Mum.
— I leave ______ to your own judgment whether you should do it.

A．that

B．it

C．this

D．what

7 . To his mind, the collaborative development of Beijing, Tianjin and Hebei province is to solve the problems _____ Beijing faces, such as overpopulation, traffic jams, and etc.

A．that

B．whether

C．when

D．why

8 . You can complain, but I doubt _____ it’ll make any difference．

A．if

B．what

C．that

D．how