A. palace B. houseboat C. motorhome D. kitchen Explanation: Palace, houseboat, and motorhome are types of dwellings or residences. Kitchen is a room within a dwelling.

A. engine B. start C. run D. control Explanation: Engine, run, and control are related to the operation or parts of a machine. Start is an action.

A. telephone B. robot C. dishwasher D. order Explanation: Telephone, robot, and dishwasher are types of machines or devices. Order is a request or command.

A. surf B. receive C. email D. send Explanation: Receive, email, and send are related to communication. Surf usually refers to riding waves or browsing the internet.

A. swimming pool B. match C. stadium D. gym Explanation: Swimming pool, stadium, and gym are places for sports or physical activities. Match is a sporting contest.