填入下面文段空白处的词语，最恰当的一组是（ ）野生兰花有两万多种，花的形状、大小、颜色、香味千奇百怪，但是目的只有一个：用花香吸引昆虫或蜂鸟来采蜜，花粉沾到了它们的身上，① 能帮助兰花传粉。② 兰花的繁衍离不开这些授粉者，③ 它有着什么样奇怪的形状、构造，④ 为了适应授粉者。授粉者为了能采到花蜜，⑤ 要适应兰花。在自然选择的作用下，兰花和授粉者⑥ 一起进化。 ①②③④⑤⑥．

Could tell me _______, Jack -I’m creative andoutgoing.

Is it the fact ____ he hasn’t turned in his research report?[ ]

What is the boy doing—It’s not necessary for you to be ________ about others’ business.

The research on the new flu virus vaccine is challenging and demanding. Who do you think can do the job?—____ my students have a try?