-How was the English evening party last night?-It was great fun. You ______ come.

  —The winner is a tall and thin boy with glasses!—Well，it________ be Mike.  He doesn’t wear any glasses.

—Where did you get this book?—I picked it up from a second-hand bookshop if you ______ know.

We used to work in the same office and we____ often have coffee together, which I missed so much years later.

This toy Mickey Mouse _______be Amy's. she's the only kid at the picnic.