SITTING ALONE IN HIS ROOM, THE STRANGE NOISE FRIGHTENED HIM.A. SI...

250. - 2000 CAU TRAC NGHIEM ANH A B C
2000 CAU TRAC NGHIEM ANH A B C

250. Sitting alone in his room, the strange noise frightened him.

a. Sitting

b. in

c. his

d. the strange noise frightened him

--> d