US First Lady Michelle Obama encouraged（鼓励）students to study abroad in her ____when visiting Peking University (北京大学) on March 22, 2014.

How can we go to the island twenty miles off the coast, sir?—I’m afraid you can’t get there ________ by boat

I feel very happy that I _________ to be the host .— Congratulations .

Andy, you were the only person that waslate for the meeting, why —Sorry, sir. But I really had a__________ time finding the meeting hall.

We don’t have plenty of money, so we can’t afford _____ such an expensive car.