Tom often watches TV after his parents ______ to bed.
A. had gone
B. have gone
C. go
D. went
Giải bởi Vietjack
Vế có after được dùng ở thì hiện tại hoàn thành để diễn tả một hành động xảy ra trước một hành động khác ở hiện tại, vế còn lại chia thì hiện tại đơn.
"parents (go) to bed" là hành động xảy ra trước khi "Tom watches TV"
Cấu trúc thì HTHT: have/has + Ved/ V3
=> Tom often watches TV after his parents have gone to bed.
Tạm dịch: Tom thường xem TV sau khi bố mẹ anh ta đã đi ngủ.
Đáp án cần chọn là: B
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