—Each boy and each girl     talking about optional courses（选修课）.—Yes! And the each     their favorite one!

There are millions of websites on the Internet and there _______ a lot of useful _________on the websites.

 I think maths ____ very interesting. 

 ---- _________you or he the teacher of English? ----Neither my sister nor my mother _________present at the meeting.

Every athlete as well as some coaches who ____ to go to the Games ____ asked to be here before 7:30 am.