1. 按要求写单词

⑴happy (反义词)       ⑵two (序数词)

⑶this (复数)           ⑷hobby (复数)

⑸swim (-ing形式)      ⑹win (过去式)

⑺shopping (原形)      ⑻housework (近义词)

⑼buy (第三人称单数)      ⑽went (原形)