For most households, lighting accounts ............... 10% to 15% of the electricity bill.

• A. for
• B. from
• C. in
• D. into

Tourists go to Thailand because they want to ............. wildlife and nature.

• A. see

• B. meet

• C. relax

• D. go

If we ................... wasting electricity, we will have to pay a lot next month.

• A. go on
• B. come on
• C. turn on
• D. put on

She always thinks of other people’s feelings and wishes. She is a (n) …… woman.

• A. considerate
• B. desirable
• C. active
• D. slavish

Air ………………. is often seen as a major environmental result of modern living.

• A. pollution
• B. smoke
• C. fume
• D. sewage

Polluted water can directly do harm ……………… people’s health.

• A. for
• B. on
• C. to
• D. over

As the saying goes, when you don't know what ……………., do what you know.

• A. to do
• B. doing
• C. does
• D. did

Our flight from Hanoi to Ho Chi Minh City was delayed …… the strong wind.

• A. although
• B. because of
• C. in spite of
• D. because

A: I’ve just passed the final exam. – B: ……………...

• A. Try harder next time
• B. Congratulations
• C. Good luck
• D. It’s nice of you

A: “I suggest using public buses instead of motorbike.” - B: “....................”

• A. Yes, please.
• B. Good idea.
• C. We will.
• D. I’m afraid not.