Have you been ____(teach) how to deal with this kind of problem?

问题描述:

Have you been ____(teach) how to deal with this kind of problem?
We’ve got three days ____ next week.(填合适的介词)
Cindy,could you help me do some chores _____ taking out the trash.(填合适的介词)


taught

off

by









最后一个为什么填by应该填like,比如。。。像。。。介词,后面跟动名词doing