Giải bởi Vietjack
Đáp án A.
Chọn on vì “Numerous studies are now going ______ in various countries”: Rất nhiều nghiên cứu vẫn đang diễn ra ở nhiều nước khác nhau.
Các đáp án khác sai nghĩa và không hợp ngữ pháp:
B. go by: trôi qua
C. go through: vượt qua, đi qua
D. go about: khởi công, bắt tay vào
Chess, often (1 )______ to as a Royal Game, is the oldest of all board games which do not contain an element of chance.
Or do they copy one another, perhaps (9) ________ envy or perhaps because they have shared information about the products?
Each bird will carry these in a miniature backpack, (15) ________, that is, from the camera, which will hang around its neck.
but I can (20) _____ up television easily enough. You can’t watch television at bus stops!
The readings made by the sensors will be automatically converted into text messages and beamed to the Internet – (14) ________ they will appear on a dedicated ‘pigeon blog’.
