797.I can't find my purse anywhyere.
You ________ have lost it while shopping.
A.may
B.can
C.should
D.would
798.It is usually warm in my hometown in March,but it _______ be rather cold sometimes.
A.must
B.can
C.should
D.would
797.答案是A;此处may表示推测。
798.答案是B;此处can用来表示客观可能性。
