[ 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:
Modal › ViewYou_______ eat healthy food to stay fit.
A. mustn’t
B. should
C. need
D. can’t
Future Tense › View
What _________ on Friday evening?
A. will do Tina
B. is going to do Tina
C. is going Tina to do
D. is Tina going to do
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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