The Smiths _______ China for ten years , so they have been used to the life here.A. have been to B. have gone to C. have been in
Bob used to __in the countryside . But now he is used to ____in the big city .
Bill ___money after three months.
It’s important _____ in good health.
——My mother is ill. ——_____
As a student , Nacy _____ with her new classmates now.