At the age of fifteen she gave up taking piano lessons to _____ her school work.
#65495
A
hold on
B
call on
C
put on
D
concentrate on
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Rod loves_____ clocks. However, he is never able to put them together again. 
#64218
A
taking apart
B
removing away
C
telling apart
D
putting away
The insect ______ a powerful drug which affects mosquitoes. 
#72063
A
contains
B
includes
C
contained
D
included