______ the blackboard, and you can ________ some number on it.
A.Lookat;seeB.Lookat;lookatC.See;lookatD.See;see...
A. Look at; see
B. Look at; look at
C. See; look at
D. See; see 展开
B. Look at; look at
C. See; look at
D. See; see 展开
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