It's time ___about the traffic problem downtown
1. It's time ___about the traffic problem downtown.
A.something was done
B.everything is done
C.anything will be done
D.nothing to be done
.标准答案：A
2. His name was ______ of my tongue, but I just couldn't remember it.
A.at the end
B.at the top
C.on the tip
D.on the point
.标准答案：C
3. ________ you return those books to the library immediately, you will have to pay a fine.
A.Until
B.Unless
C.If
D.Providing
.标准答案：B
