There (are) a large supply (of pens) and notebooks (in the storeroom) (to the left of) the library entrance.
A、
are
B、
of pens
C、
in the storeroom
D、
to the left of
【正确答案】
A
【答案解析】
there be句型中be的变化和与它邻近的主语一致。本句的主语是a large supply of pens and notebooks中心词是supply，所以要用单数形式，改“are”为“is”。
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