1. B

2. A

Dependent clause of concession

1, She isn't brilliant but she studies quite well

2, Minh was ill. He still came to the meeting

3, He is old, he still leads an active life

4, Ba worked hard, he failed his exam

5, It rained heavily, we decided to go to see the match

6, The weather was bad, they went out for dinner

7, His salary is good, he isn't satisfied

8, The house isn't nice, but I like the garden

9, I didn't speak the language. I managed to make myself understand

10, I told a joke. Nobody laughed

11, They didn't pass their TOEFL exam. They studied hard

12, Every one, young and old, can make conical hats. Conical hats involves 7 steps to complete