There are some spelling mistakes in your composition，but __________ your composition is good.
| A．as a whole | B．on one hand |
| C．on the whole | D．on the other hand |
Jumping out of＿＿＿＿＿airplane at ten thousand feet is quite＿＿＿＿＿exciting experience．
| A．不填； the | B．不填； an | C．an； an | D．the； the |
The warmth of＿＿＿sweater will of course be determined by the sort of＿＿＿wool used．
| A．the； the | B．the；／ | C．／； the | D．／；／ |
Paper money was in＿＿＿use in China when Marco Polo visited the country in＿＿＿thirteenth century．
| A．the；／ | B．the； the | C．／； the | D．／；／ |
Professor White has written some short stories, but he is＿＿＿known for his plays．
| A．the best | B．more | C．better | D．the most |
—— Have you seen＿＿＿pen? I left it here this morning．
—— Is it＿＿＿black one? I think I saw it somewhere．
| A．a； the | B．the； the | C．the； a | D．a； a |