We__pay anything/The concert is free
a. mustn't b. didn't need c. don't need to

1

Объяснение:

Они не обязаны платить за концерт тк он бесплатный

1- one

2-two

3-three

4- four

5-five

6-six

7-seven

8-eight

9-nine

10-ten.

1. shorter 2. best 3. many 4. more modern 5. sunnier 6. happier .