[ Tenses ]
The engine…. smoothly when it suddenly stopped.
A. Runs
B. Running
C. Has run
D. Was running
E. Is running

Random Topics:
Continuous TenseRelative & Interrogative PronounsGrammar and IdiomsPresent Perfect Tense and Simple Past TenseHow often - long - much - manyGerunds + To InfinitiveSimple Present TenseGrammar on ConditionalsSimple vs Present Continuous TensesPreposition of TimeOther quiz:
Grammar › View… to the football match on Sunday?
A. Are you going
B. Do you go
C. Will you be
Noun Clause › View
No one from the outside world knew ….. Wakanda was so technologically advanced.
A. where
B. that
C. what
D. that is
