完成下列句子的同义表达

1. John is better at playing football than Peter.

    John __________ __________ __________ playing football than Peter.

2. Why don't you ask our English teacher for help?

    __________ __________ __________ our English teacher for help?

3. Yes, I agree.

    Yes, I have __________ __________ idea __________ you.

4. Betty's mum doesn't think that today people eat as well as in the past.

    Betty's mum thinks that today people eat __________ __________ in the past.

5. Now we don't have as much free time as we did before.

    Now we have __________ __________ __________ than we did before.

下列4条叙述中，正确的一条是( )。

A．计算机系统是由主机、外设和系统软件组成的

B．计算机系统是由硬件系统和应用软件组成的

C．计算机系统是由硬件系统和软件系统组成的

D．计算机系统是由微处理器、外设和软件系统组成的