-----Guess what! I’ve passed my oral English test and got A. ----- congratulations. You ____ practiced a lot. A. must have B. should have C. must D. should
Had it not been for the fact that about 30 pupils __________ in the state of Connecticut
a fortnight ago, their parents ___________ in deep sorrow now.
In China when caught, those corrupt(腐败的) officials are sometimes limited to _________ in a certain place, only __________ their problems within an appointed time(规定的时间).