[ Subject Verb Agreement ]
The number of chromosomes in a cell (varies / vary) from species to species.
A. varies
B. vary

Random Topics:
Relative Clauses beginning with PrepositionsModals and Comparative SuperlativeLinking VerbCorrelative conjunctionsModals and PhrasesGrammar: Simple Past and Past ContinuousModals and Past TensesOrdering AdjectivesPassive Voice, Question Tag, PrepositionsSimple Future TenseOther quiz:
Simple Tenses › ViewWhich sentence is in Simple Past Tense?
A. She watches TV every evening.
B. He was watching TV now.
C. They watch TV every night.
D. She watched TV yesterday.
Modals › View
What do you say to express ability in the past?
A. I could climb trees when I was 10.
B. I could’ve done my homework but I was too tired.
C. Could you give me extra homework, please?
Conjunctions › ViewTom is very friendly …. he is also a very good student.
A. and
B. but
C. so
D. because
Vocabulary › View
Quixotic means
A. noble but rash
B. sensible but unfair
C. sneaky
