My friend, David, was not used __________ by air, so he felt unwell.

 There were lots of people _____， and not one of them offered to help. 

---How do you often spend your spare time? ---Personally speaking, there is nothing happier than reading a book, ____ a cup of tea.

 When we visited my old family home, memory came ________ back.

. He is too tired ________ any longer.