Oh, Tom your face is very dirty.Look at yourself ___ the mirror.
-Do you have any plan for the coming holiday? -I thought I might stay with my parents, but something unexpected ______.
When it comes to relieving stress, proper rest and good nutrition can help, _______.
The little child ____go out alone at night, so he ____walk in the dark that night.
-We had _______really smoggy December this year. -I can’t remember _____ winter when air was polluted so severely.
To succeed as an artist, one must ________talent and discipline.