It’s a sunny day. Li Yan and I go to the zoo. We see many animals. What is that? Oh, it’s a tiger. Look, the lions are under the tree. The birds are in the nest (窝). The zoo is very clean. We can not see mosquitoes (蚊子).

1.It’s ________ today.

A rainy

B windy

C sunny

D snowy

解析：选C。C 细节理解题。根据It’s a sunny day.可知今天是晴天，故选C。

2.We see many ________.

A tigers

B animals

C mosquitoes

D cats

解析：选B。B 细节理解题。根据We see many animals.可知我们看到许多动物，故选B。

3.________ are under the tree.

A Lions

B Tigers

C Birds

D Pigs

解析：选A。A 细节理解题。根据Look, the lions are under the tree.可知狮子在树下，故选A。

4.The zoo is very ________.

A big

B clean

C small

D nice

解析：选B。B 细节理解题。根据The zoo is very clean.可知动物园很干净，故选B。