Student or Learner
The bomb went _____ in front of the embassy.
a. up b. off
The key is "b". But just now I found in my dictionary the following definition and sentences:
a. go off: ignite, explode, e.g.
The bomb went off, killing three people.
b. go up: explode, e.g.
The bomb went up, killing three people.
I can't see the difference between the two phrases. Or may I say that in my original sentences both "a" and "b" are correct?
Looking forward to hearing from you.
Thank you in advance.