Betty is often seen___(help)the old man with his housework.
问题描述:
Betty is often seen___(help)the old man with his housework.
答
to help
祝你学习进步,更上一层楼!请记得采纳,谢谢!(*^__^*)
答
to help
贝蒂经常被看到帮助老人干家务,被动语态中不能省略to