Which sentence best explains the motivation behind the stranger's interest in elisas chrysanthemums?

Hey guys! i've got an exercise where you've to find out the correct sentence in each pair. 1) a-we were tired and thirsty, so we stopped to have a drink at the cafè. b-we were tired and thirsty, so we stopped having a drink at the cafè. 2)a-if your computer freezes, try to turn it on and off again and see if that . b-if you computer freezes try turning it on and off again and see if that . me! it's urgent!