完成句子（共10小题；每小题1.5分，满分15分）
71.I guess that my little daughter____________________（在玩）toys at this time tomorrow.(play)
72.The river is_________________________（3倍长）that one.(length)
73.Only when you get down to doing it____________________（你能解出）the problem.(work)
74._______________________（尽管他们很穷），they are generous and friendly to others.(as)
75.It’s high time that______________________（你申请）the job.(apply)
76.So far e-mail, as well as telephones,____________（发挥重大作用）in daily communication.(play)
77.I feel it is your husband who_________________（应受责备）for the spoiled child.(blame)
78.It __________________（晚了），we decided to leave at once.(be)
79.Born in 1371 in Yunnan province and____________（抚养）in a family originally from Central Asia,Zheng He heard many stories of travel through foreign lands in his youth.(bring)
80.On hearing the good news, the girls_______________（突然哭起来）：“We have won!”(burst)