“Bump” means “Hit someone or something _________ accident”.

orry to keep you waiting —Oh, not at all I _____ here only a fewminutes

The stranger stopped and turned around _____to see if someone was following him [ ]

17．－I didn’t pass the English exam.－Work hard, _______you’ll succeed

His speech is welcomed by our middle school students because it___manyproblems that the teenagers care about.