Câu hỏi: Because blood from different individuals may different in the type of antigen on the surface of the red cells and the type of antibody in the plasma, a dangerous reaction can occur between the donor and recipient in a blood transfusion.

A. Because

B. different

C. can occur

D. and

Câu 1: Although Nam worked very hard, but he didn’t pass the final exam.

A. Although

B. hard

C. didn’t

D. pass

Câu 2: It was not when he talked to her that he knew the truth.

A. was not

B. when

C. talked to

D. knew the truth

Câu 3: If you need to keep fit, then why not take on a sport such as badminton or tennis?

A. to keep

B. why not take

C. on

D. a sport such as

Câu 4: I was amazed that Smith showed so few grief at his mother’s death.

A. was

B. amazed

C. showed

D. few

Câu 5: The amount of women earning Master's Degrees has risen sharply in recent years.

A. The amount of

B. Master’s

C. has risen

D. recent years

Câu 6: There is a severe famine in Somalia, and thousands of people are dying from hunger.

A. There is

B. thousands of people

C. are dying

D. from hunger