—Hi, Tom, why do you look so tired?
—Because I ______ last night to finish my homework.
| A．stayed up | B．made up |
| C．wake up | D．looked up |
—Hi, Tom, why do you look so tired?
—Because I ______ last night to finish my homework.
| A．stayed up | B．made up |
| C．wake up | D．looked up |
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