完成句子。

1. John was hoping to work with the new teacher. (同义句转换) John was               working

    with the new teacher.

2.                 (你怎样解释) your long absence from classes?

3. Mary                (减肥) in the last few months, and she looks more beautiful.

4. Ways must be found to                       (阻止河流污染).

5. Lily               (对…有天赋) learning languages. No wonder she can speak four foreign languages.