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Some people won’t realize the importance of their health _____they have lost it.
#47319
A
for
B
but
C
until
D
as
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Li Ming is my good friend. He often helps me         my English.
#48206
A
at
B
on
C
with
D
for
）Tong  is  afraid         ,because  he  was terrified  by  an  air  accident．
#48421
A
fly
B
of flying
C
to flying
D
flying
Children usually get presents     Children’s Day.
#47888
A
on
B
in
C
At
D
under
—What’s your speech        , Dr．Smith ?—Tomorrow you will get it．
#50508
A
by
B
of
C
from
D
on
I like the black watch. What      Lily?
#48621
A
at
B
for
C
about
D
in