After ________ you that letter I realized how stupid I was.
A. sent B. sending C. send D. to send
Gina used to ____on weekends, but now she is used to_____ insects with her friends.
A. watch TV; studying B. watching TV; studying
C. watch TV; study D. watching TV; study
It’s ______ for my son to go to school from here. It only takes five minutes on foot.
A. interesting B. dangerous
C. convenient D. difficult
Jack's mother taught me how ________ Yunnan rice noodles last weekend.
A. to make B. making C. make D. to making
You can ask the policeman for help_________you don’t know the way.
A. though B. if C. unless D. until
The villagers found a ________ dog in the house.Perhaps it died two days ago.
A. dead B. sick C. young D. strong
