Câu hỏi: The boy _________ won the two medals is a friend of mine.

A. which

B. whose

C. whom

D. who

Câu 1: This is _________beautiful piano that I'm sorry I have to sell it.

A. too

B. such

C. such a

D. so

Câu 2: This attic has a very low _____. Mind your head!

A. floor

B. wall

C. hall

D. ceiling

Câu 3: His illness was caused by _____.

A. overwork

B. health

C. fitness

D. vegetables

Câu 4: While she _________dinner, he was washing the dishes.

A. prepared

B. was preparing

C. had prepared

D. prepares

Câu 5: I. Choose the word or phrase which best completes each sentence.

A. opening

B. open

C. opened

D. to open

Câu 6: She was going very fast _________ she was in a hurry.

A. unless

B. so

C. because

D. although