Whose room is bigger, Li Pin’s or ______—His room. But my room is nicer!

The author of the article believes that it is the test system，________teachers，that is responsible for the heavy burden of the middle school students nowadays.

Can you tell me ____? [ ]

We do not know how astronauts can ________ when they spend months in space without the protection of the atmosphere.

y lazily in the armchair under the tree, the sun_____down through the broad leaves