For the engine to work, the green button _____ be in the “on” position. [ ]

Look at the ______________. Can you find the Diaoyu Island（钓鱼岛）

g what he said, the whole hall fell _________ with no one saying anything.

There may____ two new schools in the neighborhood.– I hear that one is a primary school, the other is a high school.

It is impossible for____________ littleroom.