Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in the following questions.
21. The children put too many oil in the frying pan in the cooking class.
A. put B. many C. frying pan D. cooking
22. Spring are coming soon! I’m going to have a picnic in the suburbs.
A. are B. have C. in D. suburbs
23. Ha Long Bay is a nature wonder of Vietnam.
A. is B nature C. wonder D. of