My pen-friend，Peter，wrote to me，expressing the hope _____ he would come to Beijing to see the 2008 Olympic Games．
| A．which | B．that | C．what | D．whether |
He looked quite healthy though he was _________.
| A．in seventy | B．in his seventy |
| C．at seventies | D．at the age of seventy |
Everything is not in good order but _________.
| A．at six and seven | B．at sixes and sevens |
| C．sixes and sevens | D．on sixes of sevens |
It was January the_________he came here last time.
| A．thirty-one that | B．thirty first that |
| C．thirtieth-one when | D．thirty first when |
About _________of the workers in that steel works are young people.
| A．third-fifths | B．three-fifths |
| C．three fives | D．three-fifth |
The workers can complete the new bridge in_________ .
| A．two and a half month | B．two months and half |
| C．two and a half months | D．two month and a half |