The book _____ he bought yesterday is very interesting.A、\ B、why C、when D、when

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Thebook_____heboughtyesterdayisveryinteresting.A、\B、whyC、whenD、whenThebook_____heboughtyesterdayisve

The book _____ he bought yesterday is very interesting.A、\ B、why C、when D、when
The book _____ he bought yesterday is very interesting.A、\ B、why C、when D、when

The book _____ he bought yesterday is very interesting.A、\ B、why C、when D、when
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