Workers built shelter for survivors, _________ homes had been destroyed.
The monitor suggested that we ______ for a picnic.
Does ___ matter if he can’t finish the job on time?
Don’t leave the water ______ while you brush your teeth.
He will _______ his uncle’s business when he is mature(成熟的) enough to deal with the public relations.
-- Why do you walk so strangely? --- This is ______ I fell over myself accidently yesterday and my left leg got hurt.