Topics: Pronouns ( Interrogative )
Can you remember ______ you found this key?
A. why
B. where
C. how
D. what
Select your answer:

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Past Tense vs Future TensePerfect Tenses of VerbsGerund Subject or ObjectDirect and Indirect QuestionGrammar for TOEFLPresent simple or Past simpleThe Structural Types of SentencesSimple Past/Past ProgressiveAdverbial PhrasesGrammar Error Correction (Simple Present Tense)Other quiz:
Mixed General Quiz › ViewFor a long time, tobacco ___ been an important crop in Maryland.
a. was
b. is
c. have
d. has
e. ever
Must and Might Modals › View
Which modal verb expresses a strong certainty about the past?
A. Might have
B. Must have
C. Can have
D. Should have
