A VISIT FROM A PEN PALI. CHOOSE THE WORD IN EACH GROUP THAT HAS THE UN...

20. - TRAC NGHIEM LOP 9 10 UNITS
TRAC NGHIEM LOP 9 10 UNITS
20. I wonder who drank all the milk yesterday. It ... have been Maria because she was out all day.A. can’t B. must C. could D. needn’t