When the powerful earthquake struck and all lights went out all of a sudden. It seemed _______ the world was at an end. 
#66904
A
as if
B
even if
C
such as
D
like that
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You must ______ your papers before you hand them in.
#69682
A
go down
B
go across
C
go out
D
go through
As a young man,Tom used to   in the town, to find a job for a few coins.
#81651
A
knocking about;waited
B
knocked down;waiting
C
knock about;waiting
D
knocked down;waited