【正文】
ibrary with five thousand books ____ to the nation as a gift. A. is offered B. has offered C. are offered D. have offered (C90 ) 8. Not only I but also Jane and Mary __ tired of having one exam after another. A. is B. are C. am D. be (C89 ) 9. The number of people invited ____ fifty, but a number of them ____ absent for different reasons. A. were。 was C. was。 (5) each of + 復(fù)數(shù)代詞,謂語(yǔ)動(dòng)用