—I’m sorry for giving you so much trouble.—__________.
New York is one of ____ in the world.
Do you have difficulty ____ English?
—Why do you ____ very happy this afternoon?—Because we are going to spend the evening at Lily’s house.
—Michael has a temperature, so he isn’t able to come. —____
—Look at the picture . ________ big watermelon it is! —Yes. Let’s see how heavy it is .