一It looks 1ike a kind of cat．What do you think?一Yes, I ________ ．

— I am glad to be invited to Susan’s birthday party on Friday evening, Mum. —            yourself, dear! But remember to be back before 10 o’clock.

—Do you think it is hard for you to learn math well?—Yes. I really want to drop it.

The teacher told the students ________ talk in class.

—Do you know who the pen_______?   —Sorry ,I don’t know.