What is the difference between chances and possibilities?
Preparing for RNE, I usually make mistakes in multiple choice tasks. For example,
«assuming it's not that difficult to create the right conditions for life to form, the universe is so big that the _______________ are if it can happen somewhere else, it will».
I was struggling to decide whether it is b or c, and eventually made a mistake by choosing c. Could you maybe explain me why b was the right one, and give some tips on tasks like that, what should I focus on?
And a side question, «With text messages, you do not need to actually call anyone. You simply type a short message and send it, ________ careful, of course, to send it to another mobile and not to a home phone». According to the key answers it should be «were (careful)», which makes no sense to me... isn't it «being (careful)»?