THE TRAIN ________ BY BAD WEATHER. I AM NOT SURE.A. MIGHT DELAY B....

6. - ON TAP KIEM TRA 1 TIET SO 2
ON TAP KIEM TRA 1 TIET SO 2

6. The train ________ by bad weather. I am not sure.

a. might delay

b. might be delaying

c. might have delayed

d. might have been delayed