用who,whom,which或that连接下列句子并标出可用that取代which,who或w hom的句子

用who,whom,which或that连接下列句子并标出可用that取代which,who或w hom的句子
1.Which car did you want to buy?(they sold it yesterday.)
I wanted to buy the car which/that they sold yeaterday.
2.Which actor are you talking about?(we saw him in a film last week.)
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3.Which film did you see?(It's on the Roxy Cinema )
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4.Which doctor did you ring?(He lives on the corner of our street)
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5.Which television are you going to buy?(You can buy it on instalments)
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6.Which boy do you want to speak to?(He served me yesterday)
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