Unit 9 Have you ever been to a museum
一。写出下列动词的过去式和过去分词 50
1.hear ______ _________2.try_______ ________3.shop ______ ______
4.sleep______ ________5.put _____ ______ 6.take______ ________
7.invent ______ _______8 realize_____ ________9.spend ______ _______
10.do _______ ________
