—Beijing experienced _____ heaviest snowfall in ____ month of January .
A.\ ; a | B.a ; the |
C.the ; the | D. the ; a |
My father made me a promise ___ he would buy me a present if I got a good mark
A.when | B.which | C.that | D.if |
I have finished translating a large part of the book, but the rest ___ more difficult.
A.is | B.are | C.was | D.were |
After the new type of rice was introduced, the farmers produced _______ rice this year as last year.
A.as twice much as | B.twice as much as | C.twice much as | D.twice as much |
The chairman thought _____ necessary to invite Professor Smith to speak at the meeting.
A.that | B.it | C.this | D.him |
_____ we were worried about was _______ they could manage to control the pollution.
A.That; how | B.That; whether |
C.What; that | D.What; whether |