Surely Mr. Peterson ____ have forgotten to buy presents for his beloved family members. After all, it was Christmas!
A.shouldn’t
B.mustn’t
C.can’t
D.needn’t
C
考查情态动词。根据后面的句子,可知Peterson不可能忘记买礼物的,而must表推测不能用于否定句,故选C。
Surely Mr. Peterson ____ have forgotten to buy presents for his beloved family members. After all, it was Christmas!
A.shouldn’t
B.mustn’t
C.can’t
D.needn’t
C
考查情态动词。根据后面的句子,可知Peterson不可能忘记买礼物的,而must表推测不能用于否定句,故选C。