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I’ d________ aren’ t________ they’re let’ s_________ wasn’ t ______that’ s________don’ t _____when’s_______didn’ t________you’ _______ doesn’ t _ __ he’ s________ she’s________ I’ m___ __ isn’ t________ I’ ve________ shouldn’ t_______ I’ ll _________who’ s _____ Exercise1 Part2 ( 練習(xí) 1 第 2 部分 )用適當(dāng)形式填空 “ be動(dòng)詞”或“助動(dòng)詞”的適當(dāng)形式填空: 1. It a quarter to ten . We having an English lesson. 2. They my parents . They doctors. 3. It Sunday morning. It sunny. 4. it often