-What _____you doing? -I'm_____ a book.
题型:选择题
问题:
-What _____ you doing?
-I'm _____ a book. [ ]
A. do, seeing
B. are, looking
C. do, watching
D. are, reading
-What _____ you doing?
-I'm _____ a book. [ ]
A. do, seeing
B. are, looking
C. do, watching
D. are, reading