________we went to visit Professor Smith, he________his research work.
#31550
A
The first time; devoted to
B
Whenever; was concentrate on
C
For the first time; was busy with
D
Each time; was absorbed in
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Leave your key with your neighbor _you lock yourself out one day.
#31885
A
as long as
B
in case
C
even though
D
as if
He was walking along the sands ______ he saw a big footprint in the sand.
#31778
A
while
B
as
C
when
D
after
Take the note as a reminder_________ you forget to buy some sweets for the kids while shopping there.
#30112
A
so that
B
even if
C
in case
D
as if