you can witch them in your spare time

Question

you can sit here in your spare time .You can sit here when you're ___
a.reading b.not working
我选B,为什么B不可以呢?
He actually has to work on them .He can't do ___
a.else b.otherwise c.other
为什么?
The books covered every inch of floor space .They take up a lot of ___
a.room b.place c.area d.spaces
我选D,请问room不是余地的意思吗?
she helped him ___one of his bookcases up the stair.
a.carrying b.carry
help后面是不是可以不加to连接一个动词?

Answer 1

第一题个人认为二选项都可以,没什么区别的,空闲时间可以不工作,可以阅读.
第二题用otherwise时因为,这个词表示“否则,不然的话”,根据题意,他实际上必须依靠它们工作,否则的话他不会做.其他两个选项直接排除.
第三题要记住space是绝对不可数名词,是不能加“s"的,所以首先排除掉.英语里面好多单词有好几种意思,就像room也有空间的意思,建议把常用的总结一下,好处多多.
第四题help sb (to) do sth,to是可以省略的.