根据句意,用所给词的适当形式填空
Max tells funny jokes and often makes his classmates ( laugh )
The zookeeper told us ___________ any noise in the zoo. (not make)
We hope you can accept our and join us . ( invite )
All of us should do something _________ the lovely giant pandas. (protect)
I heard your daughter _________ in the next room at ten last night.(sing)