小题1:Driving at night without lights on is against the law.
小题2:Can you explain to me why my computer often goes wrong? /
explain to me why there is often something wrong with my computer?
小题3:At present, all the students are putting all their effort into revising for exams.
小题4:Alice bought a computer online yesterday in order to spend less money / in order not to spend more money.
小题5:So far, the teachers from the western areas have been used to the life here.
小题6:At that moment, they had difficulty coming up with/thinking of new ways in such a short time.