Some social workers_____ different skills often meet at the community centre.
He doesn’t know _________.A、to do what B、how to do C、what to do
He also _________ some signs asking for old bikes.A、put down B、put up C、put off
Study hard, _____you will get better grade.A、or B、and C、because
He pretends _______this thing.A、not know B、not knowing C、not to know
Tom, your hair is too long. Would you please get your hair ?A、cut B、to cut C、be cut