__________________, WE WOULD HAVE WRITTEN TO HIM. A. IF WE KNOW HI...

24. __________________, we would have written to him.

A. If we know his address

B. If we knew his address

C. If we had known his address

D. If we have known his address

Read the following letter and choose the best answer for each blank.

hen we were working in the tenth (25)_______ of the building, suddenly we heard a terrible

fire alarm. We (26)_____ rushed out of the room and scrambled to the lifts, which

(27)_______ stuck. So, we ran down-stairs in horror. It (28)_______ me approriate 30-40 minutes to get out

of the building on that day and came out on the street.