Question

(m) We... (have/are having) a party to celebrate
our wedding anniversary. Would you like to
come?
In) The problem of world overpopulation ......
(is concerning/concerns) all of mankind.
lol When I .......(had/have) arrived they started
the meeting​

Answer 1

Answer:

have

is concerning

had

Answer 2

Answer:

(A) have

(B) is concerning

(C) had