—Smart phones are more and more popular now.—So they are. But they still ______ too much.
-This kind of T-shirt looks____ and sells____ in the shop.
The word “nut” has “n” and “u” in it .
---Don’t smoke here, please. ---______.
---To achieve a bright future, we should ___ study hard ___ keep in good health.---I agree with you.
---I have great ___ in learning physics and I’m so worried. Could you help me?---Sure, I’d be glad to.