Mark the letter A, B, G, or D to indicate the correct answer to each of the following questions. ( LÀM VÀ GIẢI THÍCH GIÚP TỚ

Mark the letter A, B, G, or D to indicate the correct answer to each of the following questions. ( LÀM VÀ GIẢI THÍCH GIÚP TỚ VỚI )
1. Local authorities should find ways to limit the use of private cars and encourage city ____ to use public transport.
A. commuters
B. planners
C. dwellers
D. people
2. London is a/an ____ city. It’s a melting pot for people from all parts of the world.
A. international
B. national
C. metropolitan
D. cosmopolitan
3. If anyone ____, ____ him I ____ back at 9 o’clock.
A. calls / tell / will be
B. called / telling / would be
C. is calling / tells / am
D. will call / to tell / am