问题

Some scientists believe that is no doubt a cure for AIDS will be found.
A:it; that
B:it; whether
C:there; that
D:there; whether
B:it; whether
C:there; that
D:there; whether
正确答案是:
同类题型
I think __________ people will go to Shanghai for the EXPO 2010.
_____ does he go to the movies? —Twice a month. [ ]
________honest girl! She is________ best student in our class.
____________ you may have, you should gather your courage to face the challenge.
________ doesn’t seem to have been much difficulty in solving the problem.