WE HAD JUST GOT OUT OF THE CAR WHEN IT TO SET FIRE.A. HAD STARTED...

27. - TRAC NGHIEM TA 12 UNIT 2 KEY
TRAC NGHIEM TA 12 UNIT 2 KEY
27. We had just got out of the car when it to set fire.A. had started

B.

started C. has started D. was starting