问题

This dictionary is very useful. It has ___ many problems about works and idioms for me.

A:looked up
B:kept up
C:taken up
D:cleared up

正确答案是：

同类题型

Jack equals his brother in strength but notin _______.He is slower in thinking .

She told us that she _______ her handbag on the bus.

The room is very large and only little room _____ by the new piano

What ____ you _____ at that time lastnight