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

A. best

B. the best

C. the most best

Câu 1: Do you have any knowledge …………….how our education system works?

A. of

B. on

C. for

Câu 2: Scientists finally ............... find a curefor the disease after years of research.

A. managed to

B. can

C. could

Câu 3: You should visit Bath. It’s ............ city.

A. a historical and interesting 

B. a historical interesting

C. an interesting historical

Câu 4: The government has released some ................... data showing how schools arenot providing an adequate education to our children.

A. shocking

B. shock

C. shocked

Câu 5: These drugs are the best medicine available as a treatment at the moment, ............ they are expensive, unfortunately.

A. although

B. because

C. so

Câu 6: Many children these days do not have ahealthy diet................ is possible thatthis is because less healthy foods are cheaper than healthy ones. 

A. What

B. That

C. It