Ⅰ、Regular verbs:
hurry-hurried-hurried,
wait-waited-waited,
arrive-arrived-arrived,
decide-decided-decided,
stop-stopped-stopped
Irregular verbs:
leave-left-left , find-found-found ,
bring-brought-brought ,cut-cut-cut , tell-told-told ,drink-drank-drunk
Ⅱ、1、have waited
2、has,seen
3、hurried
4、hasn't found
5、told
6、have decided
Ⅲ、tiger, their, ship , killed, tried, arrived, enough , towards , teaches, is
IV、Possible answers:
1、But I haven't read it yet.
2、I have already heard it.
3、I have already finished reading it.
4、I have already eaten some cakes.
5、I haven't cleaned it yet.