[ Grammar ]
I ___________________________ when I heard a loud knock on the door.
A. is sleeping
B. am sleeping
C. was sleeping
D. were sleeping

Random Topics:
Academic VocabularyTOEIC Grammar and Vocabulary ReviewPresent Tense vs Present ContinuousAuxiliary WordsBe used to vs used toFuture Tense (will/be going to/p.continuous)First and Second ConditionalVerb Patterns / IngComparison & Modal Verbs in Passive VoicePresent Simple vs Past SimpleOther quiz:
Past Simple Tense › ViewI ______ to school last Sunday.
A. did not go
B. did not went
C. does not go
D. are going
Phrasal Verbs › View
She put _______ speaking to him as long as possible.
A. over
B. away
C. off
D. back
Grammar › ViewRead and complete: I’ve _____ butterflies.
A. Catchen
B. Catched
C. Caught
Mixed General Quiz › View
Lake Fork is the best lake for ___ large mouth bass.
a. catch
b. to catch
c. catching
d. catches
