用所给单词的适当形式填空。
【小题1】The class ___________（meet）is very important， so you shouldn't be late for it.
【小题2】Lisa was in a hurry ___________（open）her gift. .
【小题3】We are planning ___________（visit）France this summer.
【小题4】It was late at night， My sister ___________ （shut）the door and went to sleep.
【小题5】Lucy was unable ___________ （find）out what had happened.