[ 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:
Tenses › ViewMy dog is… in our town.
A. big
B. bigger
C. the biggest
Grammar and Vocabulary › View
Does your mother chat online with friends?
A. Yes, I do
B. Yes, she do
C. Yes, she does
D. No, I don’t
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
