Tiếng AnhTừ đề thi
Question 20: A. that are pointed downward instead of letting light spread upward without control B. that point downward instead of letting l...
Đề bài
Question 20:
A. that are pointed downward instead of letting light spread upward without control
B. that point downward instead of letting light spread upward without control
C. that have pointed downward instead of letting light spread upward without control
D. that point upward instead of letting light spread upward without control
