1 . ________was reported, COVID-19 is genetically similar to the known bat   coronaviruses. (用适当的词填空)

2 . I had told the manager the day, ____ I attended the meeting. (用适当的词填空)

3 . The designer ________ (organise) the meeting so well that he became more famous. (所给词的适当形式填空)

4 . My eldest son, _____________work takes him all over the world, is in New York at the moment. (用适当的词填空)

5 . She and her family bicycle to work,___________helps them keep fit. （用适当的单词填空）

6 . We choose this hotel because the price for a night here is down to $20, half of _______ it used to charge. （用单词适当形式填空）