Question 1:
Student 1: ....... did you finish the test so quickly? It was so difficult.*^*Student 2: Well, I studied really hard this past week so it was quite easy for me.
A. What
B. Where
C. How
D. When

These questions are from this test. Would you like to take a practice test?

Where, Why, What, When and How (2) | B2 – Upper-Intermediate