PART 4:

Mark the letter A, B, C or D to indicate the correct answer to each of the following questions

Câu hỏi

Tom and Mary are still discussing the math exercise with each other because they _________ how to do it.

A. aren't working out

B. didn't work out

C. haven't been working out

D. haven't worked out

Grade 11_Unit 7_Test 1