——Must I park my car behind the building?——No, you needn’t. You _____ park it here. 

—When I first got to Harvard, my awkward English brought me great trouble.——Oh, dear, it _______a struggle for you to keep up with other students.

—What have you learned from your experience in Thailand?—Well, meeting people from another culture ______ be very difficult．

If you ______ talk about it with me, please wait till I finish my work at hand.

 — Mary, whose photo is it?—It ______ be Lu’s. Those are her parents.