Mary writes __________ than __________ boy in her class.

Would you like to play football after school—____. I have a lot of homework to do.

Maths is more popular than____.

I was walking along the street and all of a sudden, a car cut in and knocked me down．— You can never be ______ in the street．

We often take part in after class activities（活动）. I like to play ____ basketball , but my brother likes to play ____ guitar .