The policeman is still not sure ______ the young man killed himself or not.
My sister can’t ________ in a river.
Let me ________ you ________ your English. A.help;with B.to help;for C.helping;with
I like swimming,but I ________ swim.
Li Yan can ________ football well.
—________ your brother swim,John? —No,he ________.