He ______ off alone a month ago, and _______ of since then.
A. set - hasn’t been heard
B. set - hasn’t heard
C. set – has left
D. set- hadn’t been heard
Giải bởi Vietjack
-Vế đầu có "a month ago" => dùng thì quá khứ đơn
dạng khẳng định: S+ Ved/V2 +O
-Vế sau có "of since" => dùng thì hiện tại hoàn thành
dạng phủ định bị động: S+have/has not+ been + Ved/V3 +O
=> He set off alone a month ago and hasn't been heard of since.
Tạm dịch: Anh ấy đã bắt đầu chuyến đi một mình cách đây một tháng và kể từ đó không ai nghe thấy tin tức gì về anh ấy nữa.
Đáp án cần chọn là: A
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