That sort of extreme diet is not _________over a long period.

• A. sustainably

• B. sustainability

• C. sustainable

• D. sustain

Answer explanation

sustainable (adj)

/səˈsteɪ.nə.bəl/

bền vững, ổn định

The boys were at home yesterday, __________?

• A. didn't they

• B. weren't they

• C. were they

• D. did they

The concert only lasted an hour, so we felt we were getting __________measure.

• A. small

• B. low

• C. short

• D. long

Answer explanation

short measure (co) thấy còn thiếu

The Internet was invented _______ the 20 century.

• A. at 

• B. in 

• C. with

• D. from

My cousin wanted to change his career because he wasn’t very satisfied with his _______.

• A. winnings

• B. earnings 

• C. proceeds

• D. savings

Answer explanation

earnings (n) thu nhập, tiền kiếm được

That school was closed last month _______ ten teachers tested positive for Covid-19.

• A. because of

• B. because

• C. though

• D. in spite of

When I was walking to school this morning, I saw a _______ girl. She asked me how to get to the station.

• A. beautiful young Korean

• B. beautiful Korean young

• C. young beautiful Korean 

• D. Korean young beautiful

Everybody in the house woke up when the burglar alarm _______.

• A. went up

• B. went off  

• C. came across

• D. came off

Answer explanation

burglar alarm go off (vp) chuông báo trộm reo lên

While my father _______ a film on TV, my mother was cooking dinner.

• A. watched 

• B. was watching

• C. had watched 

• D. watches

__________________, I will let you know.

• A. When I had found out the truth

• B. When I find out the truth

• C. When I was finding out the truth 

• D. When I found out the truth