Question

Besides keeping a watch on his movements, the police tapped his phones. (Use: Not only....but also)
a. Not only did the police keep a watch on his movements but also tapped his phones.
b. Not only did the police kept a watch on his movements but also tapped his phones.
c. Not only do the police keep a watch on his movements but also tapped his phones.
d. Not only has the police kept a watch on his movements but also tapped his phones.

Answer 1

Answer:

B

Explanation:

Not only did the police kept a watch on his movements but also tapped his phones