The earth could be younger and took more than three times longer to form than _______ thought, according to a new study.

It is commonly assumed that the growth of GDP and the development of people’s living conditions are not _______cause and effect.

These problems are different from each other, so they should be dealt with         .

Two middle-aged passengers fell into the sea. ______, neither of them could swim.

They returned home after a long journey,___________________.

---- You don’t go to that supermarket quite often, do you?  ---- No, I only go there ______ because it’s too far away from my house.

I’ll be ________ to do the same thing in your situation.

He injured his leg. ______, he couldn’t play in the game.

Please admire the ___decorated rooms where King HenryⅤⅢ met kings from other countries.

—Have you finished your project, Alice? —I’m afraid I       forgot about it.

The medicine won’t cure the disease -- it ________stops the pain.

We were all very much attracted by the beautiful scenery ______ we set foot in the village.

It is a great concern that the school is now ____ for experienced teachers.

Come ______, everybody! Look at this _______, and you will find something terrific.

He found it hard for Alan to focus on his teachers for longer than five minutes, _________ if the lecture was boring. 

When Mom looked back on the early days of their marriage, she wondered how they had managed with ______ money.

. ______we’ll be able to drive a car______ by electricity, solar energy in about ten years.

. --- This book by Tony Garrison is of great use for our course. --- But I think his latest one is______ worth reading.

—Can you lend me some money?—I’m short of money myself, but _____, I’ll give you some . 

In my opinion , the thief is likely to come , please look _____ for him .