--- Hey, Tom.I think I am quite familiar with these photographs.--- It is impossible for anyone_________ them before, because Mr.Newman had them developed today.
#93607
A
having seen
B
to have seen
C
to see
D
seeing
推荐题目
 Accustomed to ______ the steep mountain, he had no difficulty reaching the top. 
#92617
A
climbing
B
climb
C
having climbed
D
have climbed
As we know, knowledge is power and the more you learn,     .
#93857
A
the more for life you are equipped
B
the more life you are equipped for
C
the more equipped for life you are
D
you are equipped the more for life
Word came ______ our duties would be changed.
#92891
A
that
B
which
C
whether
D
when