[ Grammar ]
Ploysodsai _____ for 2 hours by the time her parents come back.
A. will have swam
B. was swimming
C. has been swimming

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Will and Will notTenses: Present simple, Past Simple, Future SimpleGrammar - First ConditionalPrepositions of Place & TimeThe Simple Present TenseGrammar: Defining Relative ClausesPresent Perfect SimpleSubject and Verb AgreementFamily VocabularyDefinite & Indefinite Pronoun & ConditionalsOther quiz:
Grammar › ViewMy friend Tom has as _____ friends as Mary does.
A. a
B. much
C. many
D. fewer
Passive Voice in Past and Present Tense › View
Girls from well-off families ____________ at home.
A. were educated
B. was educated
C. were educate
D. was educate
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A. if
B. because
C. when
D. or
Grammar › View
The following expressions are formal, except …
A. I was wondering if I could borrow it
B. would you mind sending it again?
C. see you soon
D. I look forward to seeing you
