Main clauses in a contract

A.“when” is often used to talk about an event that takes place at the same time as some longer action or event described in the main clause

B.“As” can also be used when we want to say that when one thing changes, another thing changes at the same time

C.In formal speech and writing, we can often leave out “subject + be” in clauses with “when” and “while” if the main and subordinate clause refer to the same subject

D.“While” is used when you are mentioning a time or event in the past and indicating that a situation has continued from then until now

How many main courses in this language school offering now？

Elanguest offers ______ main courses now.

The best statement of the main idea of the passage is that ______.

A．human brains differ considerably

B．the brain a person is born with is important in determining his intelligence

C．environment is crucial in determining a person's intelligence

D．persons having identical brains will have roughly the same intelligence

Which of the following sentences is the main idea of this passage？

A．Children in the Old Country are not as happy as their counterparts in America.

B．America is a country in which the concept of children is more emphasized than any other countries in the world.

C．Adults in America are becoming increasingly useless.

D．Adults should learn from their children because they are more energetic.

What is the main purpose of this passage？

A．To give some good advice about how to reduce computer system unsteadiness.

B．To stop people from buying no-name products.

C．To advertise the advantages of name-brand hardware.

D．To make known the unsteadiness of computer systems.

What is the main idea of the last paragraph？

A．It shows the reason why people think some colors are warm and others are cool.

B．Warm colors remind people of warm days.

C．Cool colors remind people of cool days.

D．People have an agreeable opinion of warm colors and cool colors.

er to be taken as authentic.