[ Past Continuous Tense ]
My sister was … in the sea while I was calling her.
A. Swimming
B. Swim
C. Swims
D. Swam

Random Topics:
Transitional Phrases and ConjunctionsArgumentative VocabularyVerb and PrepositionCountable & Uncountable NounsPresent Simple & Present Progressive TensePrepositions of Time & PlaceAdverbVerb & GrammarTenses and VoiceSentence CompletionOther quiz:
Grammar › ViewMother….for our breakfast every morning.
A. cooks
B. cook
Grammar › View
The best time _________ the Flag Tower of Ha Noi is during the evening when it lights up.
A. visiting
B. visited
C. to visit
D. to be visited
