The world's largest international contemporary art fair which brought together the works of more than 2,000 artists in Basel, Switzerland, (16) ---- last Wednesday. However, just before the closing day, on Tuesday, a woman who was performing in front of the exhibition centre (17) ---- playing her second song when an Art Basel employee (18) ---- her to stop and leave the area because she (19) ---- to perform at the art fair in advance. The reason for this unpleasant interference was that it was the (20)---- of Art Basel Fair to turn down such spontaneous actions.


16.
A) had closed
B) was closing
C) have closed
D) closes
E) closed

17.
A) has just started
B) had just started
C) just starts
D) will just start
E) will have just started

18.
A) has asked
B)was asking
C) is asking
D) asked
E) had asked

19.
A) hasn't registered
B) isn't registering
C) hasn't been registering
D) hadn't registered
E) hadn't been registering

20.
A) policy
B) politics
C) trend
D) possibility
E) insult​