Last night, Dan hung out with his friends too late. When he came home, he went upstairs without a _______. But to his surprise, his father was sitting in his room.
Mr. Li makes me ____, because it is bad for my health.
Tom didn’t go hiking with his classmates ____ his illness.
How will you feel when ____?
Do you have difficulty ____ English?
—Why do you ____ very happy this afternoon? —Because we are going to spend the evening at Lily’s house.