-Hey, Jack! I’ve worked on this math problem half an hour ,but it’s got me nowhere. Could you give me a hand ?- ______ . I’m good at math.
--How much are these pants? --_______ twenty dollars..
A: _____is Mary? B: I think she is at home.
Some ________ are on the table.
Thanks _____ the photo of your family.
Is your photo in the desk? ________.