study，eat，read，climb，help，listen，have，live，look，fly，like，clean，play的过去式

studied，ate, read, climbed, helped, listened, lived, looked, flied, liked, cleaned, played.

studied ate read climbed helped listened had lived looked flied liked cleaned played

studied，ate, read, climbed, helped, listened, lived, looked, flied, liked, cleaned, played

我不太会填，应该在这些词的后面加ed就可以了吧。