* Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
All_________provided a living for nearly 90 percent of the population of the American colonies.
A. The thing needed
B. that is needed
C. what is needed
D. for our needs
Chọn A Cấu trúc “be to blame for: là nguyên nhân chịu trách nhiệm cho việc gì.”
Các đáp án còn lại không hợp nghĩa.