[ Grammar ]
Every part of the world _____ by now.
A. Was explored
B. Were explored
C. Are explored
D. Has been explored
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Tenses › ViewThe study of genetics ____ significant progress this year.
A. is making
B. made
C. makes
D. will make
Subject Verb Agreement › View
Choose the sentence in which the subject and verb agree.
A. Either he or I are planning the meeting.
B. Either he or I am planning the meeting.
C. Either he or I is planning the meeting.
Grammar › ViewCorrect the mistake
Listen! They play the trumpet.
_
A. plays
B. are playing
C. playing
D. is playing
Grammar › View
Which word is misspelled
A. absorbent
B. interfere
C. contiguos
D. barbaric