__________ useful advice he has given us!
| A．What a | B．What | C．How | D．What an |
I didn’t know when he _____ back. He said he would call me when he _____ home.
| A．would come, got | B．came, got | C．will come, gets | D．came, would get |
Four days __________ enough for us. We still need ________ two days.
| A．isn’t, another | B．aren’t, another | C．isn’t, more | D．aren’t, more |
The big fire hasn’t been __________ yet?
| A．put off | B．put away | C．put out | D．gone off |
We will never forget those happiest days _______ we spent on the summer camp.
| A．which | B．that | C．when | D．on which |