I'm sorry I didn’t phone you，but I've been very busy_____ the past couple of weeks． 

---How do you think of Steve Jobs who succeeded in creating the empire of Apple?
---I think the most important is that he had intelligence ______the ordinary.

Why not get some work experience first ______ go straight on to university?

—What happened over there?
—They argued________the waiter________the price of the meal.

Customs vary greatly _______ country to country.

Don’t you think this sweater is too tight ____ the shoulder?

He will revenge himself____his neighbor, a mean (卑鄙的) officer, ____ the murder of his wife.

________ 18 June 1940, Churchill gave another fine speech when he drew attention ________ the courage of everyone defending Britain.

It is illegal for a public official (政府官员) to ask people for gifts or money_____ favors(恩惠，帮助) to them.

Scientists are convinced______ the positive effect of laughter______ physical and mental health.