45号钢热膨胀系数:初3英语问题

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上周六一个小男孩掉进公园的水池里.
Last Saturday a little boy____ ____a pool in the park.

昨天我直到看完那场精彩的足球赛才开始做功课.
I did____ begin to do my homework ____ I finished seeing the exciting football match last night.

1: fell in
2: not...until

1.fell into
2.not, until

fell into
not until

fell into ; not until