Choose the correct answer from the options given below: I ____ this office last month.
A
will join
B
have joined
C
joined
D
would join
Correct Option:
C
Explanation
"Last month" refers to a completed time in the past, so the simple past tense is required: "I joined this office last month." "Have joined" normally does not combine with a finished past-time expression such as "last month."
