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.