“不打的不血拼,不下馆子不剩饭,家务坚持自己干,省下钱来去充电。”“抠抠族”的上述消费行为启示我们要 ( )
If you don't understand something, you may research, study, and talk to other people _______ you figure it out.
because
though
until
since
Many airlines now allow passengers to print their boarding passes online ______ their valuable time.
save
saving
to save
saved
Jane moved aimlessly down the tree-lined street, not knowing ______she was heading.
why
where
how
when
______ birds use their feathers for flight, some of their feathers are for other purposes.
Once
If
Although
Because
-______ that company to see how they think of our product yesterday?
-Yes. They are happy with it.
Did you call
Have you called
Will you call
Were you calling