[ Vocabulary ]
features that make organisms different from one another
A. characteristics
B. variation
C. behavioral variation
D. physical variation

Random Topics:
HomophonesModals Posibility and ProbabilityPronouns/ Present TenseModals and Present TensesPast and Past ContinuousInfinitive and GerundsComparison and ModalsGrammar and PunctuationModals and Active and Passive VoiceEs and SOther quiz:
Grammar speak,talk,say,tell › ViewI ___ her that I was busy.
A. told
B. said
C. spoke
Grammar › View
My friend ………….me while I …………………the homework
A. was phoning / was doing
B. phoned / was doing
C. phoned / did
D. were phoning / were doing
Grammar › ViewIn recent years there has been a large increase ………….. the number of people who take no regular exercise.
A. of
B. in
C. for
Conjunction › View
I was having a nice time here, ……. I decided to stay longer.
A. because of
B. because
C. therefore
D. due to
