[ Subject-Verb Agreement ]
He is tired because he had been ____ (sing) for hours.
A. Sings
B. Sang
C. Sing
D. Singing

Random Topics:
Past Tense & Present Perfect TenseFuture - be going tomust/shouldModal Auxiliaries and To Be VerbsGerunds as objects of prepositionTenses and Verb FormsDo / Have / Can - Basic QuestionsGrammar & VocabularyPast Simple and Past Continuous TensesEmployment VocabularyOther quiz:
Modal Verbs › View……………………….. I make a call on you mobile?
A. Can’t
B. May
Grammar › View
Simple Past
They _ _ _ a journal to remember the memory last week.
A. Write
B. Writing
C. Wrote
D. Writes
Adjectives and comparisons › ViewThe elephant is ……. than the mouse ( big).
A. bigger
B. biggest
Idioms › View
These big books shouldn’t be taken ___ from the library.
a. after
b. in
c. away
