Let’s go fishing if it thisweekend. — But nobody knows if it .

Did you see Tom yesterday —No, I ___________ him for a long time.

Where is Jason I want to tell him about the result of the singing competition.—Oh, you ________________. He has known it already.

People under 18 should _______ to go to an Internet bar.

标出以下三个句子正确的升降调。What`s your phone numberDoes your mom have long hairThat`s right.