相关试题
---What should I do for the health of my teeth, doctor?
--- Well, it’s best to ______ your teeth before you go to bed.
| A．blow | B．wash | C．brush | D．break |
---_____ can we protect the environment in our daily lives?
--- As for me, I think we are supposed to use both sides of paper and try not to use plastic bags.
| A．How | B．Why | C．When | D．Where |
--- Hey, Eric! What has happened?
--- The lift is broken again! You know, I live on the _________ floor.
| A．twelve | B．two | C．twice | D．twelfth |
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