The river, ______the bank are covered with trees, is very long.
It is almost five years_________we saw each other last time.
—Do I need to give a tip if I eat at a fast food restaurant in the United States? —Yes, it’s a common ______ to tip waiter in a restaurant.
________difficulties we may come across, we’ll help one another to overcome them.
Don’t lose heart. You should believe the harder you study,____________.
— “May I speak to your manager Mr. Williams at five o’clock tonight?”— “I’m sorry. Mr Williams ________ to a conference by then.”