写出完全形式：
1.who's=who is
2.she's = she is
3.he's = he is
4.what's = what is
5.where’s= where is
6.we're = we are
7.you're = you are
8.that's = that is
9. I'm = I am
10. isn't = is not
11.aren't = are not
12.they're = they are
13.don't = do not
14.let's = let us
15. can’t = can not
16. it's = it is
17. I’ve = I have
18. I’d = I would
19. hasn’t = has not
写出下列单词的复数形式：
1.bus —— buses
2.box —— boxes
3.glass —— glasses
4.class —— classes
5.watch —— watches
6.mango —— mangoes
7.firefly —— fireflies
8.sheep —— sheep
9.people —— people
10.man —— men
11.woman —— women
12.apple —— apples
13.family —— families
14.library —— libraries
15.baby —— babies
16.boy —— boys
17.toy —— toys
18.child —— children
19.foot —— feet
20.strawberry —— strawberries
21.horse —— horse
22.policeman —— policemen
23.dress —— dresses
24. fish —— fish
25.tooth —— teeth
26.country —— countries
27. foot —— feet
28.dragonfly —— dragonflies
29.me —— us
30.building —— buildings
31. cloth —— clothes
32. this —— these
33. that —— those
34.circle —— circles
35.story —— stories
