how is cheese made ?, when was the computer invented ?, what time are your friends coming ?, why was the trip cancelled ?, where was your mother born ?, why didn't you come to the party ?, why doesn't this machine work ?, how do you pronounce this word ?, can I sit here ?, when will you be home ?, should I take the bus home ?, I don't know where Tom has gone . , how far is it to the airport ?, when is Lisa going on holiday ?, I wonder how old Tom is ., could you tell me where the bank is ?, do you know what time you will arrive tomorrow ?,

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