Jet lag causes problems with our_____ clock.

Choose the correct answer to complete the sentence: Some students think that gets good marks________ the most important thing that they must pay attention to.

We do apologize for the inconvenience resulting from the service which is now temporarily .........................

Put in the correct preposition.

I couldn't find the street I was looking for, so I stopped someone to ask _____ directions.

Choose the best answer:
Miss Brown told Mary_______ down.

About 20 percent of U.S electricity currently ..........  nuclear power plants.

By the end of this week, I_________here for ten days. 

My daughter is                      young to go to school.

Choose the best answer:
 I have heard Dang Thai Son_______ the piano.

That carcinogenic substances_______in many common household items is well-known.

Find mistake: (Research) in the United States on acupuncture (has focused) on (it) use in (pain relief) and anesthesia.

The professor is thinking to go to the conference on conservation next month.

Choose the best option  A, B, C or D that best completes each sentence. " All planes ….before departure."

His ability  ..........  mathematics in a short time is wholly admirable.ut

The evidence that carbon dioxide levels are rising is _______

Two boys make self-portraits by looking at ............  in the mirror. 

Many online retailers state that it is................than they expected to set price that attract more customers while boosting their profit margins.

Onie and Osca are talking in a coffee break.

Onie: “  ....................   .”

Osca: “Yeah, me too. See you later.”

Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to the underlined part in each of the following questions: 

Dissemination of information is frequently carried out via satellite - through local or national TV networks. 

Jenny: “What did your grammar teacher want to talk to you about?” Peter: “I did badly on the last test. She .............  studied for it.”

Choose the best answer from the four options given (A, B, C, or D) to complete each sentence.

Ms.Borgen changed jobs_____________because her former position provided little flexibility.