People _________ rivers for transportation since the beginning of history.A．used
题型：不详难度：来源：
| A．used | B．have used | C．use | D．had used |
|
答案
| B |
解析
试题分析：句意：自从历史之初人们就用河水来作为交通工具，根据句意和since引导的从句可知用完成时，现在完成时的构成have done的结构。结合语境故选B |
举一反三
---Mum, it’s late. Why are you still here?
---Dad hasn’t come back yet. I _____ for him.| A．am waiting | B．have waited | | C．was waiting | D．waited |
|
---Why didn’t you go shopping with me two hours ago?
---Because my mother________ me outside.| A．waited for | B．is waiting for | | C．was waiting for | D．has waited for |
|
It’s said that this kind of milk ________ well this year. It will be sold out soon.| A．is sold | B．was sold | C．sells | D．sold |
|
--Do you know when Jim _________ ?
---I don’t know. As soon as he , I will call you.| A．will arrive ; arrives | B．arrives ; will arrive | | C．will arrive ; will arrive | D．arrives ; arrives |
|
---We played football this afternoon.Why didn’t you play with us?
---Sorry, I really wanted to. But I __________Jim fix his bike then.| A．help | B．helped | C．am helping | D．was helping |
|
最新试题
热门考点