It seems you need to apologize quickly ______ a good friend. 

Simon made a big bamboo box       the little sick bird till it could fly．

____ to Anne's birthday party. Mr. Brown is now searching shop after shop for a nice present for her,

_____in convenient locations, chain stores are usually next door to people’s homes and close to the bus stops or underground stations.

The speech he made ____ the project has bothered me greatly.

The next thing he saw was smoke ______ from behind the house.

Though       to see us, the professor gave us a warm welcome.

All the teachers discussed the plan that they would like to see __________ in the next school year. 

I still remember __________ chess in class by my teacher about twenty years ago.

You can’t imagine what great trouble they have _________ the problem_______.

They covered the body of the little hero with a flag, leaving his face_________.

_______ of the heavy burden of homework, the children rushed out of the classroom and enjoyed themselves.

________ in the cage for half a day, the bird became hungry.

The children went home from the grammar school, their lessons ______ for the day.

_________ in Current Biology, the finding suggests that female birds seek mates with superior singing skills.

_______ the necklace borrowed from her friends made her_____ completely.

____the problem of land erosion(侵蚀) getting more serious, the government is searching for a way to deal with it. 

I really appreciate ____ to help me with my maths, but I’m afraid that I have no time this week．

_____ that he isn’t adequate to the present job, he devotes all his spare time to studying  professional knowledge.

Let’s stop_____ and_____ a rest.