问题

You seem familiar with Mr. John—Of course, we _________ together for threeyears in the 1990s.

A: have worked
B: were working
C:are working
D: worked

正确答案是：

同类题型

DoyouknowLucy’sgrandma—Ofcourse.Sheisakindwoman,butshehas______foraboutamonthsinceshe_____in theaccident.

The 16th Asian Games ____ in Guangzhou fromNov. 12 to Nov. 27, 2010.

The drunk driver wishes he _____ so many injuries in the accident.— But he _____. [ ]

I’m not going to put myself _____ the bank.

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．