Read the sentence.
_[blank]_ were invented during World War I, but their use often backfired when the wind shifted direction.
Which correctly completes the sentence?
Responses
Chemical weapons
Flamethrowers
Artillery shells
Grenades
_[blank]_ were invented during World War I, but their use often backfired when the wind shifted direction.
Which correctly completes the sentence?
Responses
Chemical weapons
Flamethrowers
Artillery shells
Grenades