My grandfather has a computer,but he doesn't know _____ to u

My grandfather has a computer,but he doesn't know _____ to use it.
A、what B、how C、who D、which
yidefang 1年前 已收到1个回答 举报

日照水边 幼苗

共回答了14个问题采纳率:92.9% 举报

B

1年前

5
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