—Do you know_______tomorrow?—Sorry, I don't know. You may surf the internet.A.whether will it rain B if it will rain C whether does it rain
He used to _______ up late, now he is used to _______up early.
Can you ______ some paper for me?
_______ valuable advice you gave me!
The apples look ________ and sell ______.
Here are some books for _____ sister and _____.