The adverb clause in this sentence is 'before class starts', and it modifies 'meet', so A is the correct answer.
Answer: A language Generator is a device that can be used to create the sentences of a language
Treasure means valuable objects
Choice A is the correct answer.
The 's' and apostrophe after the word singer lets the reader know that something is belonging to the group of singers. The apostrophe will always go after the 's' if we are talking about a group of individuals.
When the choral group began, the singers' voices carried throughout the auditorium.
