—Is Jack on duty today?—It __________ be him. It’s his turn tomorrow.
A. mustn’t B. won’tC. can’t D. needn’t
—Is Jack on duty today?—It __________ be him. It’s his turn tomorrow.
A. mustn’t B. won’tC. can’t D. needn’t
C。
根据下文的It’s his turn tomorrow可知,Jack今天“不可能”(can’t)当班,故应选C。