[ Conditional Sentence Type 1 ]
We _______ thousands of trees if we _______ so much paper.
A. save – won’t waste
B. will save – don’t waste

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PunctuationsComparative - SuperlativeModals of ObligationGrammar - Present Perfect with for and sinceTOEIC Grammar and Vocabulary ReviewIdentifying TensesIrregular AdjectivesPresent Continous TenseSubjective and Objective PronounConjunctions and PrepositionsOther quiz:
Grammar › ViewChoose the right variant:
10.45 (time)
A. A quarter to eleven
B. Ten point quarter
C. One point fourty five
D. Fourth five point ten
Gerund vs. Infinitive › View
I hate ….. maths.
A. To study
B. Study
C. Studying
Potter is studying at Luong Van Tuy High school, ____?
A. was he
B. weren’t he
C. isn’t he
D. didn’t he
Simple Present vs Present Progresive › View
I _______________ English class during this month.
A. am not take
B. am not taking
C. are not taking
D. am not take