Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best completes each of the following exchanges.

Anna is seeing Bill off at the airport.

Anna: "_______"

Bill: "I will."

A. I'll miss you much.

B. Give my best wishes to your parents.

C. Have a nice trip!

D. Wish you a happy journey.

Diana: ‘I didn't know you could play the guitar so well, Toan. Your tune was lovely!’

Toan:  ‘________.’

A. You are welcome

B. I bought it near my house last week

C. You've got to be kidding! I thought it was terrible

D. Never mind

The workers have gone on strike. ________  all production has ceased.

A. So that

B. Therefore 

C. Because

D. Now that

Amin T bậc một, chứa vòng benzen, có công thức phân tử C₇H₉N. Số công thức cấu tạo thỏa mãn với T là 

A. 1

B. 2. 

C. 3. 

D. 4.

\(\left(x+9\right)+\left(x-8\right)+\left(x+7\right)+\left(x-6\right)+\left(x+5\right)+\left(x-4\right)=63,6\)

\(\Leftrightarrow x+9+x-8+x+7+x-6+x+5+x-4=63,6\)

\(\Leftrightarrow x\times6+3=63,6\)

\(x\times6=63,6-3\)

\(x\times6=60,6\)

\(x=60,6:6\)

\(x=10,1\)

Benzyl axetat có mùi thơm của hoa nhài. Công thức của benzyl axetat là

A. CH₃COOC₆H₅.

B. C₂H₃COOC₆H₅

C. CH₃COOCH₂C₆H₅

D. C₆H₅COOCH₃