A.thanB.whenC.afterD.before
A. than
B. when
C. after
D. before
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Watras understood he was picking up radiation at．home as_________．
A. he always set off alarms when passing through the monitors
B. most of his co-workers passed through the monitors without problem
C. he proved one day he wasn’t picking up．radiation at work
D. scientists found out his house contained radiation
My mother knows Jane. They _________to each other at a party.
A. have been introduced
B. are introduced
C. were introduced
D. had been introduced
A.cakeB.badlyC.babyD.face
A. cake
B. badly
C. baby
D. face
The Greens chose to live_______ life was cheap，and they moved to a small town years ago
A. if
B. until
C. when
D. where
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