单项选择题

The biggest advantage of this new system is that ______.

A．it reduce the cost of recycling
B．it saves time and space
C．it saves money for people in high rises
D．it makes better use of the existing recovery equipment

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热门试题

单项选择题

Before dropping rubbish into the chute you have to ______.

A．lock the other floors' chute doors
B．check if the container is full
C．press the correct button
D．break up the rubbish

单项选择题

A．girlfriendB．boyfriendC．cousinD．husband

A．girlfriend
B．boyfriend
C．cousin
D．husband