Question

The following passage has not been edited. There is an error in each line. Pick out the error and write the correct word for that in the space given:
There is no doubt that -------------- ---------x--------
loudspeakers is one of the -------------- -------------------
gifts of science and has a great -------------- ------------------
utilities. They are very useful -------------- ------------------
when larger gatherings are to be -------------- -----------------
addressed. But the trouble arose -------------- ---------------
when such a useful thing is used. -------------- ----------------​

Answer 1

Loudspeakers are
Has -have
Utilities utility
Gatherings gathering
Arose arises
Is are