题目内容
二、 用所给词的适当形式填空
1. You can hear the birds (sing) in the yard every morning.
2. 1 heard someone (speak) when I passed the room.
二、 1. sing 2. speaking
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题目内容
二、 用所给词的适当形式填空
1. You can hear the birds (sing) in the yard every morning.
2. 1 heard someone (speak) when I passed the room.
二、 1. sing 2. speaking