1
Q
familiar
A
one who is often seen or well known
2
Q
hollow
A
an unfilled space
3
Q
sonic boom
A
a sound created by an aircraft traveling faster than the speed of sound
4
Q
curiosity
A
inquisitive intrest in others concerns
5
Q
flicker
A
to move irregularly or unsteady
6
Q
investigate
A
to observe or study by close examination
