A study shows a worrying tendency that the window for saving the world's coral reefs from the effects of global warming is rapidly closing.这句话是用主动代替被动的用法吗？
...ly misleading" a committee hearing last month when he told parliament that his firm did not use any Facebook data. 请问老师，a committee hearing 前是否缺少介词？ accuse sb of sth。
如题—How _______ you speak to your class teacher like that?—Because he didn't treat us alike. I think it is unfair.A. may B. dare C. should D. might答案：D 这是might 是什么用法呢？为什么B不行呢？
Children are linguistic sponges, but this doesn’t mean that cursory exposure is enough. They must hear a language quite a bit to understand it—and use it often to be able to speak it comfortably.我请老师分析粗体部分句子结构，use it often to be able to speak it comfortably，我晕...
请问老师while在这里是什么用法？Its Intelligent Transport System tells drivers when roads are crowded,
while changing traffic lights and planning alternative routes that drivers can
follow.
Karipidis
said that having more cellphone towers actually reduces the amount of radiation
emitted from cellphones, because they don't have to work as hard to get a signal.这句话的work as hard的修饰关系是什么？
Scientific studies show that
laughter produce chemicals _______ people feel better.
A. to
have made B to make
C. making
D. having made曹老师好，正确答案选B。请问C.
making 是否也正确，为什么？谢谢曹老师。