[ Tenses ]
The teacher ____________ many times but they still don’t understand.
A. has explained
B. will explain
C. is explaining
D. explain

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Linking Words and ConjunctionClausesPresent Simple or Present ContinuousGrammar - Present Perfect with already, just, yetApostrophe GrammarCOUNT - NONCOUNT NOUNSGrammar, Literature, and VocabularyPresent and Past TensePresent Perfect TenseTo Infinitive or Bare InfinitiveOther quiz:
Participle Adjectives › ViewCold, grey weather always makes me feel __________.
A. depressed
B. depressing
Vocabulary › View
PART OF SPEECH: Intercession is a(n) __________.
A. adverb
B. adjective
C. noun
D. verb
Grammar › ViewIt doesn’t pay to resort on / in / to / with tough measures.
A. in
B. on
C. to
Grammar › View
She has been working for this company ___ 20 years.
A. since
B. for
C. yet
