. People have always been_______about exactly how life on earth began.
#19892
A
curious
B
excited
C
anxious
D
careful
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The more often one takes exercise, ______ he or she will become. 
#19345
A
the strong
B
the stronger
C
more strong
D
more stronger
She is _______ at her boyfriend. 
#18622
A
disappointed
B
disappointing
C
disappoint
D
to be disappointed