The chemicals in the vegetables and fruit are bad__________ our health．
| A．from | B．with | C．of | D．for |
—Do you have any difficulty______ the work in two days?
| A．to finish | B．finishes |
| C．finished | D．finishing |
—White doesn’t look good _______ you,but you look cool _____ black.
| A．on ; on | B．on ; in | C．in ; in | D．in ;on |
—The green bag reminded the old man _____ the days when he was young.
| A．with | B．by | C．of | D．at |
. —We find ______ impossible for us to learn a foreign language well in a short time.
| A．it | B．this | C． one | D．that |
—You should spend as much time as you can_____the piano.
| A．practicing playing | B．practice to play |
| C． practice playing | D． practicing play |