THEY COULD UNDERSTAND OUR CONVERSATION IF THEY ……….SOME ENGLISH A....

17. - File thứ 1: 2nd-mid-term-test-e-9_23052021
File thứ 1: 2nd-mid-term-test-e-9_23052021
17. They could understand our conversation if they ……….some English A. knew B. would know C. will know D.know