[ Tenses ]
They haven’t studied the subject.
A. Simple Present Tense
B. Present Continuous Tense
C. Present Perfect Tense
D. Simple Future

Random Topics:
Vocabulary and TensesRoot WordThings in EnglishVerb + InfinitiveWill & Be going toGrammar, Conditional Sentences, VocabularyTenses PracticeModal VerbsProverbsAlong & AgainstOther quiz:
Grammar › ViewRudolph has a _____ nose.
A. big
B. green
C. red
D. happy
Grammar › View
Before __________ a decision on what to order, John asked the waiter for his recommendation.
A. Make
B. Made
C. Making
D. Being made
E. Any answer is right
He …(read)… his newspaper this morning.
A. read
B. reading
C. readed
Mixed General Quiz › View
The house was so damaged that it was decided to ___ it to the ground and rebuild
a. laze
b. raze