Câu hỏi: When you write your essays you ............. copy ideas from books without referencing them properly.

A. mustn’t

B. don’t have to.

C. have to

Câu 1: This factory produces some of .............. cameras in the world.

A. best

B. the best

C. the most best

Câu 2: A recent government report has warnedthat ...................... we act immediately to reduce pollution, there will be serious consequences, for the planet.

A. provided that 

B. in case

C. unless

Câu 3: The charity is trying to find ways tosave and ............ the world’sendangered animal species. 

A. the charity is trying to find ways to protect

B. to find ways to protect

C. protect

Câu 4: I’m aiming ........... a band 7 in IELTS.

A. on

B. for

C. to

Câu 5: ………… people live in the countrysidethan 100 years ago.

A. Less

B. Few

C. Fewer

Câu 6: What ........... in order to get a permitto work in your country?

A. do I need to do

B. must I do

C. ought I do