1. 从方框中选择合适的词组,并用其适当形式填空。

stick to,   in that case,   plenty of,   shut off,   once in a while

1. （1） —It will cost about 2,000 yuan to fly to Sanya.

   —Well, , why not fly to Guangzhou first and then take a train there?
   

3. （2） Once you have started the job, it's better it until it is completed.
5. （3） Your phone must before the plane takes off.
7. （4） TheContinent is a good movie with jokes. It makes me laugh and think a lot.
   
9. （5） I like pop music best, but I listen to some country music .