To understand the grammar of the sentence, you must break it       into parts. 

A good article should not only be rich in the use of language, but also it ought to be ________ organized. 

She put some soil in the box, then sowed the seeds carefully, and covered it with more soil. _______ she kept the box in the shade.

____ the fire broke out, three fire-engines were rushed to the spot.

I don’t like the pattern of the trousers. ____ , the color doesn’t suit me.