I WONDER WHO DRANK ALL THE MILK YESTERDAY. IT ... HAVE BEEN JANE B...
21. I wonder who drank all the milk yesterday. It ... have been Jane because she was out all
day.'
A. must
B. could
C. needn't
D. can't
21. I wonder who drank all the milk yesterday. It ... have been Jane because she was out all
day.'
A. must
B. could
C. needn't
D. can't