英语问题(一个单词一分)

正确。
cover 覆盖
be covered with/by 被...覆盖
cover sth with sth 用...覆盖

提供某人某物：
offer sb sth
offer sth to sb
supply sb with sth
supply sth to sb
provide sb with sth
provide sth for sb
六者相等。

Used to do sth过去常常做某事

be used to (doing)sth习惯于（做）某事

be used to do sth被用来做某事