[ Tenses ]
While I ____ TV last night, a mouse ran across the floor.
A. have watched
B. was watching
C. watched
D. have been watching

Random Topics:
Present TensesModalFuture Perfect TenseModals for Advice, Obligation/Prohibition, Necessity and Lack of NecessityGrammar & ReadingTime Clauses of FutureWish, Unless, If sentenceFuture Simple TensesSynonymsActive and Passive voiceOther quiz:
Parts of Speech and Compound Sentences › ViewYou can repeat the experiment “if” you have the equipment.
A. conjunction
B. adjective
C. pronoun
D. preposition
Tenses › View
Let’s go out! I ____________ my homework.
A. did
B. have done
C. am doing
D. do
Modal Verb › ViewShe hasn’t eaten anything since yesterday. She_____ be really hungry.
A. might
B. will
C. must
D. can
Grammar › View
After failing at many attempts, I wanted to give up my dream; however, my father would not ____________ me.
A. hope
B. keep
C. let
D. want