[ Present & Past Tenses ]
The engine….smoothly when it suddenly stopped.
A. is running
B. runs
C. has run
D. running
E. was running

Random Topics:
Adverbial Clause / If / ComparativesPhrasal Verbs with up and downTense1st & 2nd Conditionals-Ing and Infinitive Verb PatternsGrammar Comma UsageExpressing Obligation and ModalsAuxiliary Verbs (be, do, have)Past and Present TensesPassive VoiceOther quiz:
Present/Future/Past Simple/Present Perfect › ViewThey didn’t collected enough books and clothes for their volunteer programme yet.
A. A. books
B. B. for
C. C. didn’t collected
D. D. yet
Time Clause › View
Only after she _______ from a severe illness did she realise the inportance of a good health.
A. would recover
B. has recovered
C. had recovered
D. was recovering
Adverb & Compound Sentences › View__________ your parents retire, they will want to travel more, __________ they need to plan their retirement carefully.
A. If, and
B. Until, for
C. After, so
D. After, or
Grammar › View
After oil was discovered, Texas became the ______________it had ever been.
A. more prosperous
B. prosperous
C. most prosperous
