A.Knock | B.Knocking | C.Knocked | D.To knock |
A.What | B.How | C.What a | D.How a |
A.Surround | B.Surrounding | C.Surrounded | D.Have surrounded |
A.Taking | B.To take | C.Take | D.Taken |
A.What a | B.How a | C.What | D.How |
A.Giving | B.To give | C.Give | D.Given |
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