请曹老师能够帮我解答:The policeman put down the phone，____with a smile on his face．A. satisfied B. satisfying C. to be satisfied D. having satisfied为什么不选B而是选A，我认为这两个动作应该是同时的啊。
The marginal wetlands that remain continue to be threatened by reclamation for farms and homes. 如何理解此处的remain continue？
难道remain后面可以接动词吗？
that remain不是做The marginal wetlands谓语吗？
continue这里又是一个谓语？
双谓语吗？
What a good listener is able to do is to process what he hears on the basis of the context _________. A.it occurring in B.occurring in it C.it occurs in 为什么答案是C？ A 和B 为什么不行？
Conquerors seized them as especially precious spoils of war;tourists came to see and hear these machines the way they made pilgrimages to sacred relics.这里way肯定是个名词，the way they made pilgrimages to sacred relics是个状语。这个状语是如何和句子主干联系起来的...
原文：And another mystery - some of these unrealistic animals - that's in the engravings - seem tobe half human.老师， that is in the engravings 这句话是some of these unrealistic&nb...
Oversight may be weaker. And the development of vaccines and treatments adds to the risk of bribery and profiteering.老师您好,请问第一句是句号，第二句加了一个and 是否属于画蛇添足。