题目内容

()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

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