问题

You can only be sure of_____you have atpresent;you cannot be sure of somethingyou might get in thefuture.

A:that;what
B:what;/
C:which;that
D:/;that

正确答案是：

同类题型

It’s time ______ dinner.

Scientists and doctors across the world have done _____ research over the years, hoping to find a cure for cancer.

u have the time－Sorry, I have no watch.－_____________.

It looks as if they are going to _________ us a lot of money for the concert hall.

There is a real possibility that these animals could be frightened, ________ a sudden loud noise. [ ]