It is difficult to write rules that tell exactly when we should apologize, and it is not difficult to learn how to do it.

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

The threat of being dismissed do not worry me any more because I have started my own business.

For thousands of years, man has created sweet-smelling substances from wood, herbs and flowers and using them for perfumes or medicine.

The Commitments of Traders Report is released by the Commodity Futures Trading Commission on eleventh day of each month.

In a federal form of government like that of the United States, power is divided between the legislative, executive, and judicial branches.

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

The University of Kentucky has held this prestigious title until 1989, when it was granted to the University of Georgia.

Mai and Lan have a row because they have misunderstood one another.

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

In July of 1861, Pat Garett killed Billy the Kid in a house close Fort Summer.

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

Little have people done to alleviate the sea pollution caused by the factories in central Vietnam, haven’t they?

Working provide people with personal satisfaction as well as money.

Tom said that he was trying to carry out some campaigns to protect environment and will encourage others to do so.

Neither William or his brother stole the rambutans from our orchard.

English, together with Literature and Maths, are compulsory subjects in the national curriculum.

The Greek historian Herodotus reported that one hundred thousand men are employed for twenty years to build the Great Pyramid at Gizeh.

The clerks who are happy to wait for their customer will get promoted soon.

Mrs. Loan, along with her talented students, are going to be on the summer camp to USA.

When a lion gets hungry, its manner changes and it becomes threatened.