Viết lại câu sao cho nghĩa không đổi

1.Why don$\text{'}$t we go simming?
$\Rightarrow$What about..............................
​2.Let$\text{'}$s listen to some music now
$\Rightarrow$Why don$\text{'}$t...............................
3.He wants a cup of tea
$\Rightarrow$He$\text{'}$d........................................
​4.Let$\text{'}$s go to the school library at recess
$\Rightarrow$How about.............................