We ought to keep these proposals secret from the chairman for the time being.
Giải thích:
secret (a): bí mật
revealed (a): được tiết lộ frequented (a): thường xuyên
accessible (a): có thể tiếp cận lively (a): sống động
=> secret >< revealed
Tạm dịch: Chúng tôi bây giờ phải giữ bí mật về những đề xuất này với chủ tịch.
Đáp án: A
The only means of access to the station is through a dark subway.
That is a well-behaved boy whose behaviour has nothing to complain about.
If we use robots instead of humans, many people may be out of work.
I think it’s impossible to abolish school examinations. They are necessary to evaluate
students’ progress.
The council has spent an enormous amount of money on this project.
Travel insurance is sometimes mistaken for temporary health insurance, but the two are actually different.
They are launching a campaign to promote awareness of environmental issues.
The government is being widely criticized in the media for falling to limit air pollution.
He had never experienced such discourtesy towards the president as it occurred at the annual meeting in May.
No one knew precisely what would happen to human being in space.