精选优质文档-倾情为你奉上用动词的适当形式填空: 1. _（support）his family, he had to work hard in a chemical works. 2. I noticed him _（slide） into the room through the back door. 3. Scientists are working on a new vaccine （疫苗）_（rid）the country of the terrible disease. 4. Respecting others is _(repect) by others. 5. The museum had several painting _(represent) the artists early style. 6. Everything worth _(regret) is gone and there is nothing _(regret) now. 7. The b
