Câu hỏi: It is really incredible that he is unaware of such basic facts.

A. difficult

B. unbelievable

C. imaginable

D. disappointed

Câu 1: Animals on earth fascinate us with their beauty, their grace and their speed.

A. improve

B. captivate

C. satisfy

D. amuse

Câu 2: Many scientists agree that global warming poses great threats to all species on Earth.

A. irritations

B. annoyances

C. fears

D. risks

Câu 3: He’s really delighted with his success.

A. pleased

B. angry

C. entertained

D. annoyed

Câu 4: It’s a really difficult matter to decide how to solve now. I will need time to think it twice.

A. to think it over

B. to make it better

C. to make up for it

D. to think out of time

Câu 5: Sports and festivals form an integral part of every human society.

A. delighted

B. exciting

C. informative

D. essential

Câu 6: Don't be concerned about your mother's illness; she'll recover soon.

A. surprised at

B. worried about 

C. embarrassed at

D. angry with