【单选题】
Well have a picnic in the park this Saturday [] it rains or it is very cold.
①
since
②
if
③
until
④
unless
【多选题】
This story_____________ a very brave (勇敢的) young girl.
①
is to
②
is about
③
concludes
④
concerns
【单选题】
His grandfather is very healthy. He _______drinks _______smokes.
①
both, and
②
no,but
③
either, or
④
neither, nor
【单选题】
Air is very important, _________ we cannot live any more.
①
without that
②
no which
③
where
④
without which