精英家教網 > 高中英語 > 題目詳情
—Hi, Johnson, any idea where Susan is?
—It's class time, so she       in the classroom now.
A.can beB.must have beenC.might have beenD.should be
D
考查情態(tài)動詞。根據It's class time可知,對蘇珊在哪里比較確定,選D意為,他現在應當在教室,表示合乎理想的情況,B,C是對過去的推測,不符合題意,A表示可能。
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