()inthemeetingroomfortwohours,theytookacoffeebreak.
A. Havingdiscussed
B. Discussed
C. Discussing
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Itwasfiveyearsago()sheresignedfromthecompany,andwehaveneverseenhersincethen.
A. where
B. that
C. before
()theindustryinthisareadevelopingsorapidly,airpollutionbecameaseriousproblem.
A. With
B. For
C. Since
Theworkerscannothelpbut()theregulationsofthecompanyastheyneedmoney.
A. toobey
B. obey
C. obeying
Itisreportedthatanotherundergroundrailway()thepublicinthreemonths’time.
A. isopento
B. isopenedto
C. willbeopenedto