1,The warmth of ( ) sweater will of course be determined by the sort of ( ) wool used.

1,The warmth of ( ) sweater will of course be determined by the sort of ( ) wool used.
A,the;the B,the;/ C,/;the D,/;/
2,In Hangzhou Mr.Green was so struk by ( )beauty of ( ) nature that he stayed for another night.
A,/;/ B,the;/ C,a;a D,/;the
3,Today the canal is still being used.Ships can be seen moving on ( ) water now and then.But it is no longer ( ) busy water highway.
A,a;the B,the;/ C,/;a D,the;a
4,My English teacher encourages us to guess the meanings of ( ) unknow words we meet our reading according to ( ) context.
A,the;/ B,the;the C,/;/ D,/;the