Crop rotation can help to prevent soil _______

It is great to learn _______ English on _______ Internet.

The student _______ the calculations twice, but he could not find the mistake.

David’s car would not start. He tried _______ gasoline directly into the carburetor but it still would network.

I think going to market in New Year season is great _______

Although the improvement in literacy has been steady and persistency, there are still many illiterates in rural areas.

_______ hard physical work as we did before.

John goes to _______ school by _______ bus every day.

Present discoveries and inventions will surely be the found for many other discoveries and inventions in the future.

He lost due to a sharp pain in his foot.

The girl asked him _______

She had to _______ her job because she could not find a babysitter to _______ her children.

Tina’s cake was not delicious. She _______ the recipe very well.

Have you met Peter _______ heard anything from him?

Tom’s company will almost certainly sack him _______ he improves his attitude.