The new group of students is better-behaved than the other group who stayed here _____.

The incomes of skilled workers went up. ______, unskilled workers saw their earnings fall.

 If a person has not had enough sleep, his actions will give him ___ during the day.

He was down with the flu, and ____ couldn’t come to the party.

Last night Mr. Crook didn’t come back at the usual time. __________ , he met some friends and stayed out until midnight. 

----- Hi, Mark. How was the musical evening? ----- Excellent! Ales and Andy performed _________ and they won the firs prize.

______well prepared you are, you still need a lot of luck in mountain climbing.

As he works in a remote area, he visits his parents only__________.

Since Tom_____ downloaded a virus into his computer, he can not open the file now.

I'm certain David's told you his business troubles. ______, it's no secret that he owes a lot of money to the bank.

In my view, London's not as expensive in price as Tokyo but Tokyo is______in traffic.

Last night Mr. Crook didn’t come back at the usual time. ______, he met some friends and Stayed out until midnight.

Running a company is not ______ a matter of hiring people—they also need to be trained.

Although badly hurt in the accident, the driver was _____ able to make a phone call.

You are driving too fast. Can you drive_________?

—Have you been to New Zealand?—No, I’d like to, __________ .

I don’t mind picking up your things from the store. _________ the walk will do me good.

He holds an important position in the company;_______, I don’t quite trust him.

Our bodies are strengthened by taking exercise,______ our minds developed by learning.

After many years’ waiting, Chinese people______ realized their dream to hold the Olympic Games.