The deadbolt is the best lock for entry doors because it is not only inexpensive but installation is easy.
(A) The best
(B) Because
(C) Not only
(D) Installation is easy
Giải bởi qa.haylamdo.com
Đáp án D => easy to install
hai từ nối với nhau bởi not only... but also... cần phải song song về từ loại. Sau not only đã có tính từ in expensive nên sau but also cũng cần chuyển thành tính từ.
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