Don’t get off the bus ____ it stops.
The course normally attracts 20 students per year, _____ up to half are from abroad.
Last month, part of Southeast Asia was struck by floods, from ___ effects some people are still suffering.
The problem is too difficult, can you show me ______ , WangLe — Sure.
What has _____ my dictionary I can’t find it. — Don’t you forget you’ve lent it to Lucy