21. A few minutes after _______ on the website, first-time InterShop users should receive an e-mail confirming their password and ID.
(A) register
(B) registered
(C) registering
(D) to register

答案：登入後查看
統計： A(17), B(60), C(282), D(4), E(0) #1368650

詳解 (共 1 筆)

#4844384

這題是考介系詞片語

after 為介系詞，後面會接名詞類(名詞、名詞片語、動名詞、代名詞)來形成形容詞片語

答案選動名詞 registering

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