The adverb clause in this sentence is 'before class starts', and it modifies 'meet', so A is the correct answer.
Panic can cause people to act before thinking.
It should be noted during this period, Russia was regarded as a poor country and it lacked a modern transport system.
In the early 1900s, Russia was an impoverished country with an enormous peasantry and poor industrial workers.
The country lacked a modern transportation system and was based on a subsistence economy. Lastly, the Russian government was an autocratic monarchy.
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