___ , we would have taken raincoats with us.
| A．Had we known | B．We had known it | C．If we were known | D．If we know |
However, the eruption itself is really exciting and I shall never forget my first sight of one.
| A．to watch | B．to be watched | C．watched | D．watching |
I go back to sleep when suddenly my bedroom became as bright as day.
| A．was about to | B．was just to | C．would | D．was to |
It is human activity has caused this global warming.
| A．which | B．that | C．what | D．why |
Sometimes some children in my primary school would laugh, when I got out of _______breath after running _____ short way or had to stop and rest halfway up the stairs.
| A．the a | B．不填 a | C．不填 the | D．a the |
—— Mike, our team will play against the Rockets this weekend. I’m sure we will win.
—— !
| A．Congratulations | B．Cheers | C．Best wishes | D．Good luck |