Which of the following sentences best concludes the main idea of this passage?

Syntax is different from morphology in that the former not only studies the morphemes, but also the combination of morphemes into words and words into sentences.

The last sentence of Para. 2 could be explained as which of the following?

The sentence following the last sentence might tell about ______.

If the essay were to continue after sentence 15, which of the following would be the best content for sentence 16?

（）simplicity, we may put the theory briefly as follows.

Before the oily water separator put into operation, it should be （）

Syntax is different from morphology in that the former not only studies the morphemes, but also the combination of morphemes into words and words into sentences.

What stage can the following grammar activity be used at?The teacher asked students to arrange the words of sentences into different columns marked subject, predicate, object, object complement, adverbial and so on.

In the sentence: “society owed it to the criminal to put into operation a punishment equal to the crime he had committed” the underlined part can be interpreted as: society .

The last sentence of the first paragraph serves to illustrate which of the following about tea?

Where is the best place to insert the following sentence?Perhaps if students could work such little excursions into their busy study schedules, they would have similar “eureka” experiences.