First, after a natural disaster, people have difficulties with housing, because it may have been destroyed
Secondly, after the disaster, people have difficulties with food
Third, after a disaster, people tend to fall economically in terms of money and documents
Many parents scold teenagers for using telephone too much.
Who was in London? He was. Who is at home? She is. Who can come? Ted can. Who could read? Ann could.
Should - следует. например you should go to hospital( тебе следует сходить в больницу)
must - должен. you must go to hospital (ты должен пойти в больницу)
need - надо. i need to go to hospital (мне надо сходить в больницу)
had to - вынужден. i had to go to hospital ( я вынужден пойти в больницу)