It seems to some experts that there are only three commonly-used vedio websites in this area: 56.com, Youku.com, Tudou.com and they_______ 90% of the market.(成都市)

Jack has failed twice in _____ PE test, he decided to have _____ third try

The Hotel Al Arab, ________ the first and only 7-star hotel in the world, was designed in the shape of a sail of 321 meters[ ]

下列划线字的读音全都正确的一项是（ ）

One of our rules is that every teacherwearschool uniform while attending the school flag-rising ceremony.