-----Can you see the little monkey _____ the tree? -----Yes, I can. Very lovely!
Mother is the person ______ is always there for you.
—Hey, Molly. You ______ on the phone just now.—Oh, I was in the library.
—Do you think the rain will stop tomorrow ?—I hope so. It ______ for three days. It's too bad.
—Whose T—shirt is this? Is it John's?—It ______ be his. It's too small for him.
—What do you often do ______ classes?—We often do eye exercises, do some running or talk with our friends.