21---Is it OK if I take this seat?

  ---Sorry._______

  A. here you are      B. take it     C. it’s taken  D. never mind

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

  A. flooding     B. to flood   C. flood       D. flooded

23. They’ve won their last three matches, ________ I find a bit surprising actually.

A. that   B. when       C. what D. which