Question

K

この英語の問題を教えて欲しいです！お願いします

1
The situation is serious. Something (
) before it's too late.
a. must.do
b. must be done
C. must have done
2
I don't(
) the phone as long as you pay for all your calls.
a. mind you to use
b. mind you using
c. mind you use