He___ along the seaside___ a tsunami came．
| A．walked；when | B．is walking；as |
| C．was walking；when | D．was walking；while |
— Would you mind if I take the seat next to yours?
— ___________.
| A．Yes, sit down please | B．No, go ahead |
| C．Surely, never mind | D．No, you can’t take it |
_____ you don’t like him is none of my business.
| A．That | B．What | C．Who | D．Whether |
Who do you think _____ for the failure of their marriage?
| A．to blame | B．to be blame | C．is to blame | D．is to be blamed |
Mr Smith gave a notebook away to me. That’s ______ I need badly.
| A．which | B．what | C．why | D．how |
He promised to come early, but he didn’t _____ until 10 p.m.
| A．turn down | B．turn off | C．turn in | D．turn up |