A．Comedy.B．Light movie.C．Mystery movie.D．Action movie.

A．About 700 million light－years from Sun.B．About 700 million light－years from Earth.C．

【C3】A．classicalB．sacredC．popularD．light

The man is a mystery for his neighbors.

The man is a【 mystery】 for his neighbors.A.proble

All plants need light a suitable climate and a（

So fast _____it is difficult for us to imagine its speed.A.does light travel thatB.light travels th