单项选择题
The casual attitude in the US does not mean（）no hierarchy in US companies.
A.that is B.there is C.there are D.that are
单项选择题 Religion, politics or ethnic background should be touched on（）.
单项选择题 The negotiation will（）in a well-prepared, calm and pragmatic manner, all laced（）a substantial dose of humor.
单项选择题 For this reason, many US（）contain the provision “time is of the essence” within their preamble.
