问题

Has Tommy finished his project yet–Maybe not. He ___on it at lunch time. Let’s go to have a look now.

A:has worked
B:is working
C:was working
D:had worked;

正确答案是：

同类题型

Courage is a good quality and is ________ it takes to get over difficulties.

It’s suggested that vehicle taxes should be set ____ on how dirty the car’s exhaust is, with no tax ___________ on the most environmentally friendly one.

He’s still not understood by his close friend although he has said sorry to him； ______

Please turn to page andlook at the picturein this unit.

．—Have you read the book Oliver Twist? —Who_______it?