A dolphin/ can/ swim/ stay/ underwater/ a long time

 I/ can/ send/ you/ references/ the Director of the Happy Mind Charity Centre.

 It’s required that you have to follow netiquettes in this chat room.

You need to study really hardly is you don’t want to fail your exams.

The diameter of the Sun is more than one hundred times greater than the Earth.

The girls were sorry to had missed the signers when they arrived at the airport.

Depending on many factors, including climate, mineral content of the soil, and the permanency of surface water, wetlands may be mossy, grassy, or covering with shrubs or trees.

Mutualism is a relationship between animal species which in both benefit .

Find the one mistake (A, B, C or D) in the sentences and then correct them: "The old woman was  very tired. She tried  to keep her eyes  to open, but she couldn’t."

 I/ make/ friends/ foreigner/ in/ chat room.

Woman devotes her time, labour and thought to the welfare of the members of the family.

By/ read/ more/ books,/ you/ become/ better-informed/ more/ expert/ topics/ you/ read

What/ most/ important/ volunteer activity/ our area?

Each sentence has a mistake. Find it by choosing the letter A, B, C or D.

She is a studious child because she never forget to do homework

 I/ had/ An/ clean/ bedroom/ before/ let/ her/ go out/ play//

In the United States, among 60 percent of the space on the pages of newspaper is reserved for advertising.

Find the one mistake (A, B, C or D) in the sentence and then correct them: "Is the competition open to children  among ten  and fifteen years of age?"

 I/ to/ will/ abroad/ spoken/ learn/ English/ go.

Society uses such human emotions as proud, shame, guilt, and fear to maintain itself.

Light can travel from the Sun to the Earth in eight minute and twenty seconds.

Cultural differences/ can/ seen/ in/ conversation/ between/ people/ different countries.