问题

There is a new problem________in the popularity of private cars that road conditions need improving[ ]

A:involved
B:to involve
C:involving
D:being involved

正确答案是：

同类题型

You’d better keep quiet in class.— Sometimes I______ . Yesterday, I was as quiet as a mouse during my English class.

The idea has been widely accepted ______ Beijing Opera should be added to the basic educationin China.[ ]

Millie’s books on the floor, right— Yes, they are.

I don’t know ____ that you stay here.

. Why shouldn’t I buy a new coat — Ihaven’t bought _____ for five years.