问题

ago we didn’t know this , but recentscience______that people who don’t sleep well soon get ill.

A:showed
B:has shown
C:will show
D:is showing

正确答案是：

同类题型

If you smoke, please go outside.

He was asked to _______ his class making a speech atthe school opening ceremony

Why h D．expected

You seem ___________. What are you____________

I hear Peterson was badly injured in the accident.— , let’s go and see him.