riving used to occur _______, but now it is under control

Talk to your teacher and you will get help ________ you have a problem.

Greatly moved by what he did, ____. [ ]

The little girl who got lost decided to remain ____ she was and wait for her mother. [ ]

Thanks a lot, Mr. Wang. I don’t know how to ________ the help you gave me during my stay here.— It’s my pleasure. Welcome to China again when you have time. [ ]