1．(2016·江苏高考)Many young people，most of ________were well－educated，headed for remote regions to chase their dreams.
2．(2016·天津高考)We will put off the picnic in the park until next week，________ the weather may be better.
3．(2016·天津高考)One day，mentally exhausted，I wrote down all the reasons ________ this problem could not be solved.
