It took us several hours to make the old man ________ of the safety of travelling by air.

 He made a decision that when he grew up, he would try his best to      money for the poor.

 While intelligent people can often ________ the complex, a fool is more likely to complicate the simple.

—We________gas.I'm afraid we can't go much further.—I know there's a gas station ahead.Sure it will last us until we get there.

If you hurry up, I think it is quite ____ that you will catch the flight to Hong Kong . There are 40 minutes left.