There are some birds singing___ the trees.
Is the cap?-- No, it’s on the desk. A.on the desk. B.on the floor.
What size do you like? A.Blue ,please. B.Small ,please.
How much are the shoes? A.It’s 30 yuan. B.They’re 30 yuan.
Do you like pandas? A.Yes, I can. B.Yes, I do.
What does he do? A.He is a doctor. B.She is a doctor.