__________________, 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.

When 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 appropriate 30-40 minutes to get out of the building on

that day and came out on the street.