问题

Is there anything wrong with you, Jake? You look so pale．—I feel very tired．I _____on this boring paper every day so far this month

A:work
B:have been working
C:had been working
D:am working

正确答案是：

同类题型

We should learn to look after ourselves. Don’t _______our parents too much.

He tried his best to comfort the injured passengers and told them help was ________.

In China, all the students work hard at school _________ going to university for higher education in the future

下面各句中加点的成语，使用正确的一项是（）

Why do you like music so much– It has the great_____ to change people’s lives.