A study has found that 80% of the people who ______ to be constantly distracted ______ more “working memory”.

There are many boys     football in your school.

There is _____　a pen, an eraser and some pencils in her pencil-box.

---- Have you heard that Tom, as well as his parents, _____ moved to Beijing?---- Really? No _____ I haven’t seen him for a long time.

Neither I nor Jane and Mary       tired of having one examination after another.