My elder sisters, both of them were doctors, said they were too busy to pick me up.

I can’t go out tonight because I have too many work to do.

The big problem was that we really did not understand what was happened

Sex's education is instituted to help the student understandthe process of maturation, to eliminate anxieties related to development, to learn values, and to prevent disease.

The harder he tried, the worst he danced before the large audience.

Both Mr. and Mrs. Smith are explaining the children the rules of the game.

Not until he got home he realized he had forgotten to give her the present.

Oxygen plays a important role in maintaining live.

The mother asked her son if he would have the floor clean the day before.

In spite of my father is old , he gets up early and does morning exercise.

I was very busy lately since the project of designing the new collection started.

The grass needs cutting, so let us have one of the men to take lawn-mower and do it.

Each of the members of the group were made to write a report every week.

For the first time in the history of the country, the person who recommended by the president to replace a retired justice on the Supreme Court is a woman.

Because they had spent too many time considering the new contract, the students lost the chance to lease the apartment.

Conservation is the safeguarding and preservation of nature resources.

Education, whether it happens at school or anywhere else, is a important part in our life.

Jason’s professor had him to rewrite his thesis many times before allowing him to hand it in.

Regarding as one of the leading figures in the development of the short story, O Henry is the author of many well- known American novels.

Please tell us the reason when he left without saying goodbye.

The puppy stood up slowly, wagged its tail, blinking its eyes, and barked.