.................. Mekong River is .............longest river in.................... Vietnam. 

You'll be at home tonight, _    ?

For thousands of years, people have used some kind of refrigeration cooling beverages and preserve edibles

What exactly is the influence of air pollution ...... human beings?

Rita is studying........... English and ...........math this semester. 

The public ceremonies of the Plains Indians are lesser elaborate than those of the Navajo in the Southwest.

He was so careless that he left the work half doing and went to the cinema.

It is large island, few people live there, though.

With an annual income of fifty thousand dollars a year, he can afford to give a luxurious life.

Harry has been admitted to ..........School of Medicine at .......... Midwestern university. 

Karen hasn’t decided still if she wants to run for the Presidency again this year.

It’s a lovely old house, I agree, but can we afford to moderning it?

When he took the ticket out of from his pocket, a hundred dollar bill fell to the floor without his noticing

It is believed that the more frequent you exercise, the greater physical endurance you will have

My brother shouldn't do that,  _    ?

Carrie Chapman Call organized the League of Women Votes after successfully campaign for the constitutional amendment that gave women the right to vote.

Water , ice, and snow play a role in affecting an Earth’s rotation

A nation's balance of trade is considered unfavorable if it ______________ more money on imports that it gains from exports. 

Vaslov Nijinsky achieved world recognition as both a dancer as well as a choreographer

American pioneers did water systems from logs with holes bored through their centers

Recently in the automobile industry, multinational companies have developed to the point where such few cars can be described as having been made entirely in one country.