Question

2. While you are driving, you ____ listen to the radio. It's not necessary.

A. Doesn't have to
B. Must
C. Don't have to
D. Must not

3. If you plan to take a long trip in the car, you ______ get a full tank of gas or you might run out of gas!!!!!

A. Should
B. Don't have to has to
C.Must not
D. Don't have to

4. When you are putting gasoline in your gas tank, you_____ smoke! It is forbidden.

A. Must not
B. Must
C. Have to
D. Don't have to

5. It's not a good idea to talk on a cell phone and drive at the same time. Drivers_____ do that.

A. Should
B. Shouldn't
C. Have to
D. Must

6. In some states, it is illegal to talk on a cell phone in your car. Those drivers _______ use phones in their cars.

A. Don't have to
B. Should
C. Must not
D. Must​

Answer 1

2: C

3: A

4: A

5: B

6: C

Espero que tenha ajudado!