Why the explosion occurred was ____the laboratory attendant had been careless.
—Why does the lake smell terrible? —Because large quantities of water_____.
Hearing a scream, I rushed downstairs, only ________the hostess lying unconscious on the floor.
—Will you go to see the Hollywood blockbuster? —If you go, _____.
Put everything _________ to you in your bag , not others.
He got annoyed, _______it wasn’t his fault if he couldn’t play as well as me, and that I shouldn’t talk to him in this manner.