[ Grammar ]
Research has shown that there are more than 4000 species __________ frogs around the world.
A. in
B. on
C. of
D. off

Random Topics:
Continuous and Perfect TensesThe Present Progressive TenseRelative Clauses beginning with PrepositionsModals and Past ModalsAdverbRelative Clauses with who and whichCountable Vs Uncountable NounsSimple Past TensesOrdering AdjectivesWill vs be going toOther quiz:
Question Tags › ViewThe movie was very long, ___?
A. A. isn’t it
B. B. wasn’t it
C. C. was it
Vocabulary › View
Someone who is travelling or visiting a place for fun.
A. exciting
B. tourist
C. slow
D. ticket
Grammar › ViewThey will look ……. a face recognition camera, and the money will leave their bank accounts.
A. of
B. into
C. in
D. for
E. at
Grammar › View
She ___ going to go to the mall.
A. will
B. is
C. might
D. may
