I didn’t go outing on National Day because the bad weather ______ the difficulty.
#74138
A
added up
B
added
C
added up to
D
added to
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His sister left home in 1998, and _______since. 
#84460
A
had not been heard of
B
has not been heard of
C
had not heard of
D
has not heard of
You can't work out this problem ___in this way.
#84000
A
rather than
B
other than
C
or rather
D
or else
Footsteps ___ his return.
#70918
A
announced
B
declared
C
pronounced
D
suggested