(为什么?）1 How far is it from our school to ___ seaside It is _

(为什么?）
1 How far is it from our school to ___ seaside
It is __eight_kilometer walk from here
A the;an B 不填；an C the;a D不填;a
2 What's on the screen?
Is there __ad for a new film?
A a B an Cthe D /
Some of the stickers belong to __,while the rest are__
A him;her B his;her C his;hers D him;hers
3Is ___OK ,lucy?
No ,my maths is not as good as English
A everything B something C nothing D anything