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题型：单选题题类：常考题难易度：容易

Millie and Kitty are good friends, they often _________ each other _________study.

A、helping; with B、help; to C、helping; to D、help; with

举一反三

People can buy different ________ things online.

The younger students in Australia can s{#blank#}1{#/blank#}their homework to their teachers by fax at home.

—What shall we do next weekend?

—Why not our teacher for some advice?

I'm not as {#blank#}1{#/blank#} (careful) as he.

这种刀是被用来切东西的。

This kind of knife{#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} {#blank#}4{#/blank#} things.

Hamburgers and ice-cream are not good _____ us.

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