问题

What were you doing when you heard Malaysian airlines flight lost?—I my homework.

A:were doing.
B:am doing.
C:was doing.
D:is doing.

正确答案是：

标签： doing , were , what

同类题型

Roy made several kites, but _____ of them can fly high in the sky.

_____ are you?—I’m twenty.[ ]

Before you start this task, you ________ realize its importance of doing it.

It won’t be ______he______ up with others.

________ climb the mountains（山）.