复习以下单词：

animal rabbit dog fish monkey donkey bear
panda fox cat pig horse cow snake tiger lion
chicken duck pigeon crab goose wolf bee elephant
camel dragon ant ape bird sheep butter fly butterfly
frog shark mouse mice giraffe zebra seal sea turkey hen
lamb spider spider-man bat Batman octopus whale
tortoise crocodile leopard dinosaur
traffic
traffic jam
traffic light
camera secondhand still computer
how much
how many
library playground circle degree
outside fair gym favourite display kick

复习以下单词：

happy unhappy sad boss box brain zoo birth birthday
place birthplace mark birthmark fire fireplace
man men fireman firemen woman women boy girl
color colour black white blue red green pink
yellow purple brown gray skyblue
use author caterpillar together
a lot of = lots of
lettuce sale mate classmate schoolmate
why leave left carrot vegetable cotton
swimming trunks
start danger dangerous smell smelt

复习单词：

run running ran
running water
running nose
jump shake nod head clap wave hand
foot feet ear stamp eye nose mouth book
touch sunflower flower small little big
come go up down left right wrong front behind
gold silver
life lives road roadside rope
hope hopeless across save think thought
alone lonely often unsafe street barbecue
light lit soup future warm again
go out
fed up
hamburger burger large plan press carry
document change

复习以下单词：

hello hi goodbye bye
good bad sorry
eat ate drink water
sun moon mooncake cake
mother father
mom mommy dad daddy
grandfather and grandmother
grandpa and grandma
son daughter grandson granddaughter
any thing
something anything nothing
sometime anytime somewhere anywhere
someone somebody anyone
fall in love with sb.
button happen

button [ˈbʌtn] 纽扣;扣子;(机器的)按钮;
happen [ˈhæpən] 发生

My shirt needs a button.
我的衬衫需要一枚纽扣。

Let me push this button.
让我按一下这个按钮。

That doesn't happen very often.
那不常发生。

This must never happen again.
这种事再也不能发生了。

what do you think will happen?
你认为会发生什么事呢？