A. survey
Đáp án D
Studies: nghiên cứu
Some interesting (27) ……….. have been done in libraries. → Một số nghiên cứu thú vị cũng đã được thực hiện trong thư viện.
TV now plays such an important role in so many people’s lives that it is essential for us to try to decide (31)_______ it is bad or good.
The TV viewers need do nothing: they (33)______ no choices, they’re completely passive and don’t even use their legs.