Câu hỏi: _____ she was very tired, she helped her brother with his homework.

A. Because

B. whether

C. Although

D. so

Câu 1: .……………silly mistake!

A. what

B. what a

C. how

D. how a

Câu 2: That restaurant has _____ delicious food that you can't stop eating.

A. such

B. such a

C. so

D. enough

Câu 3: This room is ______ to study. Please switch on the lights.

A. enough dark

B. dark enough

C. too dark enough

D. too dark

Câu 4: That's the cat ______ we saw yesterday.

A. that

B. which

C. whose

D. A and B are correct.

Câu 5: You may have an accident soon _____ you are driving so carelessly.

A. despite

B. because

C. because of

D. unless

Câu 6: We couldn't find a taxi _____ we walked home.

A. so

B. because

C. although

D. such