17. It seems obvious, when looking at a map, that the eastern part of Brazil ______ connected to Africa long ago when the earth was forming.
(A) must be
(B) must have been
(C) should have been
(D) might be

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統計： A(79), B(392), C(162), D(156), E(0) #858817

詳解 (共 2 筆)

#1293620
對過去狀況的推論:must have +過去分詞      一定曾經...
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#3082924

在看地圖時，巴西東部地區很明顯在早期地球形成時，曾經是跟非洲相連的。

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私人筆記 (共 2 筆)

私人筆記#6834182
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(A) must be： must...
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私人筆記#5055115
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17. It seems obviou...
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