Which career would be the most difficult to do? Why?

The development of new inventions in the field of space travel seemed rapid. how does the word rapid function in a sentence?

How could an audio recording most likely convey the characters emotions during the scene

Question 1 translate: i have to eat. question 2 translate: one must study. question 3 to make a good grade, one must pay attention. para sacar una buena nota, prestar atención. question 4 to make money, one must work. para ganar dinero, trabajar. question 5 translate: maria has to talk.