66. I asked Lan, “Is Phong Nha Cave in Southern Vietnam?”
I asked Lan ……………………………………………………………
A.I asked Lan if Phong Nha Cave are in Southern Vietnam.
B.I asked Lan Phong Nha Cave if were in Southern Vietnam.
C.I asked Lan if Phong Nha Cave were in Southern Vietnam.
D.I ask Lan if Phong Nha Cave were in Southern Vietnam.
