16. The researchers suggested that plastic pollution _____ addressed immediately.
(A) be
(B) is
(C) was
(D) will be

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統計: A(26), B(4), C(8), D(11), E(0) #3493859

詳解 (共 1 筆)

#6598022
正確答案是 (A) be。 翻譯:研究...
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