The train ______ at seven o’clock and you’d better get to the station by half past six.

He started to study ecology and decided to _______his whole life to the science.

Recently a terrible earthquake happened in the Southern Asian Area, _______ the people are still suffering.

What’s wrong with you, MrKeller? — I’ve had a very bad headache for two daysAt first, I ______ I caught a cold, but the medicine ______

At last the two companies ____an agreement and began to trade with each other .