看图片，选择正确的句子。
( ) （1）
A.There are a lot of flowers on the peach trees.
B.There are a lot of grass.
( ) （2）
A.Today is a rainy day.
B.Today is a sunny day.
( ) 3. 
A.We’re making a snowman.
B.We’re cutting rice.
( ) （4） 
A.The bird is flying.
B.The kite is flying.
I'm going to Beijing ________ the National Holiday.
A．inB．onC．at
What ________ they going to do tomorrow?
A．beB．areC．is
—________ are you going?
—This afternoon.
A．WhatB．WhereC．When
I want to buy ________ shoes.
A．a pair ofB．pair ofC．two pair of
I'm going to ________ a science teacher one day.
A．doB．beC．is