Sorry，we don’t allow ________ in the lecture room.

 —Do you know who the first spacewoman in the world is?—I’ve no idea. But it’s reported that the first Chinese spacewoman will be selected _____ a task in the Shenzhou-9 spacecraft this summer.

Don’t make the students _______ this or that . They are busy.

.---What do parents in China want their children to do? --- Most parents expect to see their children_____ hard all day.

There are some children _____ in the room.