Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction in each of the following questions.
The bigger of the three daily meals for most American families is dinner, served at about six o’clock.
Giải chi tiết:
Around 150 B.C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness.
Biogas can be utilized for electricity production, cooking, space heating, water heating and process heating.