I ... A LETTER TO MY FRIEND THIS MORNING.A. WRITEB. WROTEC. HAD WR...

30. - 3500 CAU TRAC NGHIEM ON TAP AV THCS
3500 CAU TRAC NGHIEM ON TAP AV THCS

30. I ... a letter to my friend this morning.

a. write

b. wrote

c. had written

d. written

--> b