The number of people in the party _____fifty, but a number of them ____ absent for different reasons.
37. All animals, ______ their size, breathe once for every four heartbeats.
36. ______ has helped to save the drowning girl is worth praising.
35. ______ the house prices have risen sharply, the number of buyers is as great as ever.
34. Is this the reason ______ at the meeting for his carelessness in his work?
33. Great honors will be given to ______ have successfully rescued the victims of the earthquake.