[ Tenses ]
His academic results have improved ______ .
A. after he had taken this course
B. before he took this course
C. when he was taking this course
D. since he took this course

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Adjective › ViewThis chicken doesn’t very good smell. How old is it?
a. correct
b.wrong
Grammar › View
Which answer is closest to abandoned?
A. torn down
B. left empty or alone
C. made more beautiful
D. built up