[ Subject Verb Agreement ]
One group of researchers ___ studying about the source of Covid-19.
A. is
B. are
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Passive and Active VoiceConditional Sentences and Adverbs-ed or -ingGerund - to Infinitive DeterminersInfinitives and GerundsPronouns/ Present TenseCoherent Sentence with Correct Grammar StructureGrammar - Present Perfect with for and sinceRegular Plural NounsOther quiz:
Grammar › ViewThough at first Tony enjoyed his karate class, he soon lost ………. and stopped going.
A. attention
B. interest
C. enthusiasm
D. excitement
Grammar › View
I didn’t buy those jeans because they ___ too expensive.
a. was
b. were
Identify the conjunction in the sentence.
He can buy the book, or he can borrow it from the library.
A. can
B. or
C. the
Vocabulary › View
The opposite of motivate is
A. cure
B. discourage
C. cheer up