It was ______ that they all went swimming in the river[ ]

— Oh , it is already 9:00, but Tom is still in bed.—He ______ late last night to watch the football match.[ ]

下列各组句子中加横线的词，解释不正确的一项是（ ）

We should never ________till tomorrow whatwe can do today.

“It’s too cold. Would you mind _________ the window”.- “_________ . But don’t do it now.”