As the bell rang all the students came out of their classes ........

English Language (Defence) Fill in the blanks

Directions: Each of the following sentences in this section has a blank space and four words or group of words given below the sentence. Out of these four choices, select the word which you consider the most appropriate for the blank space and mark your response accordingly.

As_____ the bell rang, all the students came out of their classes.

well as

usual

long as

soon as