10 颗豆豆
1. 单选题
10 秒
我的
my book = mine
my = mine
mine = my
mine = I
2. 单选题
10 秒
你的
you = you book
your = your book
yours = your book
yours = yours book
3. 单选题
10 秒
他的
his = his book
he = he book
him = he
he = him book
4. 单选题
10 秒
她的
she = her
she = her book
her = her book
hers = her book
5. 单选题
10 秒
他（她、它）们的
they
them
their = their book
theirs = their book
6. 单选题
10 秒
我们的
our
we
us
ours = our books
7. 单选题
10 秒
攀爬(现在分房)
clim
climing
climbing
to climbing
8. 单选题
10 秒
跳（现在分词）
jump
to jump
jumping
to juming
9. 单选题
10 秒
互相
each
other
each other
eachother
10. 单选题
10 秒
激动的
excite
excited
exsite
exsited