[ Adjective ]
We saw …fireworks in the sky.
a.exploded
b.exploding

Random Topics:
Present Simple x Present ContinuousModals of ObligationReported speech (statements)Conditional Sentence Type 3Verb Present Simple TenseContractions and ConjunctionsWas & Were QuestionsConnectorsModal "Have to"Noun Phrases and AdverbialsOther quiz:
Vocabulary and Grammar › ViewWhich word means “to hurt”?
A. leave
B. harm
C. selfish
D. difficult
Tenses › View
She ___ every morning before breakfast.
A. exercises
B. exercised
C. exercise
D. will exercise
Grammar › ViewChange to passive:
John’s mother raised him in a small town.
_____
A. John was raised in a small town by his mother.
B. John has been raised by his mother in a small town.
C. John was being raised in a small town by his mother.
D. The mother was raised in a small town.
Grammar › View
The exam ___ easy. You never know. But right now you need to study for tomorrow.
A. might be
B. must be
C. must have been