The writer and professor ______to ______abroad for two years. But no one knows which country he studied in.
A. are said; be studying B. is said; have studied
C. are said; to study D. is said; have been studying
The writer and professor ______to ______abroad for two years. But no one knows which country he studied in.
A. are said; be studying B. is said; have studied
C. are said; to study D. is said; have been studying
B