根据句意及首字母完成句子。
小题1:Don’t forget to buy a s before you post the letter.
小题2:The old man lives in the house by himself , so he feels very l .
小题3:You must t away the waste . It’s very dirty.
小题4:Mother often w me to practice playing the guitar harder.
小题5:The students often have a f exam at the end of the term.
