She found her calculator______ she lost it.
A. when
B. where
C. then
D. there
查看答案
You should make it a rule to leave things______ you can find them again.
A. where
B. when
C. in which
D. that
It was quiet______ those big trucks started coming though the town.
A. before
B. after
C. until
D. unless
Hardly had he reached the school gate______ the bell rang.
A. while
B. when
C. as
D. as soon as
I recognized you______ I saw you at the airport.
A. the moment
B. while
C. after
D. once