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