[ Mixed Tenses ]
While I _______ at the bus stop, three buses went by in the opposite direction.
A. was waiting
B. waited
C. had waited

Random Topics:
QuantifierAdjective vs AdverbGrammar - SimilesParticiple Clauses & Cleft SentencesPronounsSynonym and AntonymFuture TenseIf Conditional Zero and OneFamily Vocabulary and GrammarPresent Perfect Continuous TenseOther quiz:
DEGREE COMPARISON › ViewI got 95 in English and 75 in Mathematic. I think Mathematic is … than English.
A. easier
B. more difficult
C. heavier
D. lighter
Vocabulary › View
most miserable; wretched
A. dire
B. reprisal
C. turmoil
D. abject
Reported Speech and Tenses › ViewChoose Modal Verb indicating possibility: It ____ rain tomorrow.
A. may
B. mustn’t
C. shouldn’t
Modal Verbs › View
You ____ call a doctor if the symptoms persist.
A. should
B. can
C. may