Each of the students, working hard at his other lessons, ___ to go to university. ---  So do I.

Taiyuan, a city in North China, was struck by a heavy snowfall last week, ______ serious traffic problems.

 If it ______ too much trouble, I’d love a cup of coffee.

With the gas _____, they had to quit the car and walked.

 I ______ this book for two weeks. I have to return it now.