[ Modals ]
Which modal verb is used to indicate an ability that existed in the past?
A. might
B. should
C. could
D. would

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Grammar › ViewWhich of the following sentences is NOT written in active voice?
A. Many scientists are studying the Loch Ness monster in Scotland.
B. Experiments were conducted by scientists on Lake Winnipeg, Canada.
C. Scientists have questioned some reports about the monster.
Grammar › View
He _____ go camping.
A. don’t
B. takes
C. doesn’t
D. take
Grammar › ViewThe ozone layer is an invisible layer of protection around the planet that protects us ____ the sun’s harmful rays.
A. away with
B. from
C. under
D. out of
Grammar › View
To persuade somebody NOT to do something
A. Contention
B. Benevolent
C. Discrepancy
D. Dissuade
