[ Grammar ]
When did you start to _____ English?
A. Learn
B. learns
C. learning
D. learnt

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Grammar › ViewEvery part of the world _____ by now.
A. Was explored
B. Were explored
C. Are explored
D. Has been explored
Grammar › View
A sentence that tells someone to do something.
A. statement
B. question
C. exclamation
D. command