Which of the following is an idiom?

Dictionaries that are medium-sized ones containing words ranging from 50,000 to 150,000 are .

Between 1250 and 1500,with Britain having trade relations with the low countries, especially Holland, as many as 2,500 words of origin found their way into English.

What does the word quick mean in the following context? John,one of the group,has just told a joke. Everyone laughs except Adam. Then Adam laughs. One of the students says: I do think Adam's quick.

The pair of wordsflower /roseshows such a sense relation as .

The majority of prefixes are characterized by their non-class-changing nature. Accordingly, we shall classify prefixes on a basis.

What does the worddomean in the phrasedo the flowers?

Which of the following is NOT a variation of idiom?

Which of the following CANNOT be defined as a word?

As cool as a cucumberis a .