问题

Our country, together with others in the Third World,________ hard to build a harmonious homelandfor human beings now.[ ]

A: work
B: working
C: is working
D: are working

正确答案是：

同类题型

Lin Zhiying is 39 years old. But he looks even _____ than a college student.—- Yes, he is one of my _____.

he two countriesonceinto one, it will become a strong andpowerful one in the world.

Libut has remarkable inner strength．

Let ________come here.

The last river __ _ they crossed is two miles wide