问题

Is there any possible way to help the children get rid of such a bad habit?— To be honest, it’s very hard, but we ______on this problem

A:work
B:worked
C:are working
D:were working

正确答案是：

同类题型

What’s the matter with John He has been sittingthere for hours.—A postcard from his father_______ an attack ofhome-sickness in him.

I will never forget the days _____ we spent together in the beautiful and quiet villages.

下列文言语句句式不相同的一项（）

difficult to find a satisfying jobtodayThis job isgreat ________ salary, but it has some disadvantages

Tony, ________ is my good friend, Harry. — Hello, Harry.