It’s a good habit to turn off the unnecessary lights, it can help save .

The theme of the painting is too ______ for the audience to understand.[ ]

have no bench to ________, so I haveto stand there ___________ TV for a while.

It didn’t take long for them to ______ the cheat，who pretended to be an expert in this field.

They don’t seem __________who ________forhelp.