When you go to a dinner party, you should ____.
Lucy said she ______________to my city the next month.
If you want to become thinner and healthier. You should eat _______food and take ________exercise.
I ________my homework while my parents _________TV last night.
----Excuse me . Have you got an eraser ? ----Sorry , I haven’t . Why __________you ask Mary ?
There _________more doctors in our hospital next term.