________ watching a movie in an IMAX cinema costs over 100 yuan, the IMAX cinemas are always full of audience．
| A．Although | B．As | C．When | D．Since |
—What colour of the following represents “purity”?
—______.
| A．White | B．Orange | C．Green | D．Red |
—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 |