Phrases, clauses, or sentences?

The vice president of the company and his assistants are having a meeting.

Although Althea had a clever idea,

Some students and their teacher in the classroom

some sophisticated instruments for the language laboratory

the companies which expand their market to several developing countries

The credit cards are widely available.

the peach flowers planted by my Grandma

Mr. Haynes runs a big company in New York.

the students finishing the English test

The city will be partially reconstructed by the newly elected mayor.