_____box cannot be lifted by a boy of five. 
#20746
A
So a heavy
B
So heavy a
C
A such heavy
D
Such heavy a
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Are you going to the football game?— No, the tickets are ________ for me.
#20416
A
too much high
B
so much expensive
C
far too expensive
D
highly expensive
He makes it a essential to put some money aside each month.
#19472
A
principal
B
principle
C
essential
D
discipline