请抬头看黑板。
B:Miss, I can't see it clearly. Could you write much bigger?
老师,我看不清。您能把字写大一点吗?
raise /re?z/ v. 抬起;升起;提高;饲养;筹集
把黑板擦干净 clean the blackboard down
A:Make sure you clean the blackboard down.
你一定要确保把黑板擦干净了。
B:I know, but these stains won't rub off.
我知道,可是这些污迹擦不掉啊。
stain /ste?n/ n. 污迹,污点;瑕疵
擦掉黑板上的字 rub words off the blackboard
A:Who rubbed my words off the blackboard?
谁把我写在黑板上的字擦掉了?
B:I did it. It's my duty today. Anything wrong?