Tom has much difficulty _____Chinese so he often asks me ______help.
Jackson________school two years ago and he________for two years.
—________can you finish this English examination? —In about one and a half hours.
—________do you go to the cinema? —Once a week.
—I can hardly believe my eyes.Is that you,Lucy? —Yes.It has been almost 20 years________we were together.
—________will the fog and haze last? —I’ve no idea.There is no sign of an end.