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

A．That	B．Whether
C．Who	D．Where

2 . ________     makes the book so extraordinary is the creative imagination of the writer.

A．That	B．What
C．Who	D．Which

3 . — 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