---Boys, don’t swim in the Fengcheng River!---Why not? Isn’t it deep enough _____?
Grace and I ________ Jeff’s classmates.
—Who are they? —This is Jim ______ that is Dale. They are my good friends. A .or B. and C. but D /
We can learn English from ________.
—Is this your desk? —_______.
—What’s on the table? —Some ________are on it.