2000÷400＝____
4200÷700＝____
500÷500＝____
8800÷800＝____
计算10ab3÷5ab的结果是（ ）
__________ your brother often play computer games?
下列句子没有语病的一项是（ ）
What's this? ____ Her name is Li Li.
Hello, Jenny.____ I'm fine.
What's her name?____ I have four.
How many books do you have?____ It's a cat.
How are you?____ Hi, Wang Hong.
What's this? 
Her name is Li Li.
Hello, Jenny.
I'm fine.
What's her name?
I have four.
How many books do you have?
It's a cat.
How are you?
Hi, Wang Hong.