-Our dining hall is always ________________ teachers and students at noon.
Mount Wuyi is worth ______. The mountains there are covered ______ all kinds of green plants.
Neither I nor he ______ compared the prices of the PC, so ______ he ______ I decided to know more before buying it.
The number of people invited ______ fifty, but a number of them ______ absent(缺席) for different reasons.
Taiwan is ______ ______ the Treasure Island of China and it is a part of China.
The tourists ______ have been to Mount Huang lost ______ in the beautiful scenery there.