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

A. Less

B. Few

C. Fewer

Câu 1: Scientists finally ............... find a curefor the disease after years of research.

A. managed to

B. can

C. could

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 minister ...................... is responsiblefor education has just resigned.

A. which

B. who

C. what

Câu 4: You should visit Bath. It’s ............ city.

A. a historical and interesting 

B. a historical interesting

C. an interesting historical

Câu 5: ................  I can’t go to the conference as I’ve got to do to Sydney on business.

A. Frankly 

B. Unfortunately 

C. Personally

Câu 6: She got a terrible mark in the exam so she ........ very hard at all.

A. mustn’t have worked

B. can’t have worked

C. didn’t work