[ Grammar ]
Christopher Columbus was the sailor ______ discovered America.
A. which
B. that
C. –
D. whose

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AdjectiveContinuous and Perfect TensesCardiology ServicesSpeculation with Modal VerbsAdverb of Frequency and TensesRequest with Modal VerbsPrepositionQuantifiers, Countable and Uncountable NounsConjunctions, Prepositions and InterjectionsReflexive Pronouns & Modal VerbsOther quiz:
Common Error › ViewThere we as a fight ………… two boys
A. among
B. between
C. with
D. on
Grammar › View
By 2040 we _______ only processed food.
A. ate
B. will be eating
C. eat
D. will have eaten
Grammar › ViewEven a suspicion of wrongdoing can ….. a politician’s reputation.
A. stain
B. impair
C. tarnish
D. sumdge
Tenses › View
Which of the following sentences correctly uses the present perfect tense?
A. I have seen that movie last week.
B. He has saw the doctor yesterday.
C. She has finished her homework.
D. They have went to the park.
