A. designs
Đáp án C
- Hai động từ nối liền nhau sẽ được chia ở dạng V + V-ing hoặc V + to V => bổ sung nghĩa cho nhau
“loe works at home designing computer systems” (Joe ở nhà thiết kế hộ thống máy tính.)
Scientists are unsure of the reason for this (27) ¬________ on the global scale either.
In time of (27) __________ transportation can rush aid to persons in areas stricken by floods, families and earthquakes.
Archaeological evidence also indicates that ball games were common among ancient peoples as (27) _____as the Chinese and the Aztecs.
Being this close to a twister is (27) ______. He must get away quickly.