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

A. although

B. because

C. so

Câu 1: 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 

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

A. managed to

B. can

C. could

Câu 3: My parents encouraged .............. this course.

A. me to do 

B. me doing

C. me do

Câu 4: ………… people live in the countrysidethan 100 years ago.

A. Less

B. Few

C. Fewer

Câu 5: Doctors have ….........us to cut downon salt in our diets if we want to reduce the risk of getting heart disease.

A. insisted 

B. suggested

C. advised

Câu 6: ................  I can’t go to the conference as I’ve got to do to Sydney on business.

A. Frankly 

B. Unfortunately 

C. Personally