Many strange new means of transport have been developed in our century, the strangest of _______ being perhaps the hovercraft(气垫船).
#91232
A
which
B
them
C
that
D
it
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I send you books today, the rest_____ in a few days.
#91670
A
follows
B
followed
C
will follow
D
to follow
With time _______ by, he began making films.
#91125
A
went
B
go
C
going
D
goes
John received an invitation to dinner, and with his work ____, he gladly accepted it. 
#91246
A
finished
B
finishing
C
having finished
D
was finished
Most of the problems ______, he has a tight schedule every day. 
#91575
A
remaining unsettled
B
remained unsettled
C
remaining unsettling
D
remained unsettling