Do you want to be healthy? ______. Smiling can help you stay healthy.
| A．Smile | B．Smiling | C．To smile | D．Smiled |
---George, how can you prove the earth is round?
---I can’t, sir. ______, I never said it was.
| A．Then | B．However | C．Besides | D．Instead |
A friend is someone ______ says, “What! You too? I thought I was the only one!”
| A．who | B．which | C．what | D．whose |
He thinks himself somebody, but we think him ______.
| A．nobody | B．anybody | C．somebody | D．everybody |
______ a light when necessary. You will bring light to other people and yourself.
| A．Try on | B．Get on | C．Turn on | D．Put on |