一、用括号里所给词的适当形式填空。
1. Amy ________________ (not receive) emails from her old friends over the past 2 years.
2. I dream to visit at least 5 _______________ (Europe) countries when I grow up.
3. I didn’t see what was happening. I _______________ (sit) in my living room then.
4. It’s 12 o’clock now. My father _______________ (read) newspapers. But my mother
_______________(not come) back home yet.
