问题
Some researchers believe that there is no doubt______acure for AIDS will be found.
A:whether
B:that
C:what
D:which
B:that
C:what
D:which
正确答案是：
同类题型
I think ____necessary for us _____the birds.
Professor James will give us a lecture on the Western culture, but when and whereyet.[ ]
Rose, I’ve just written a poem. Want to read it– _______ Come on.
–Where can we park ___ car –Don’t worry There’s sure to be ____parking lot nearby
I don’t mind _______ scared, so I’ve made up my mind ______ the horror film.