It’s common knowledge that ________ United States is one of ______ biggest developed countries in the world.
| A．the; / | B．/; the | C．the; the | D．/ ; / |
No sooner _____ they rushed out into the street.
| A．did they hear the news than | B．had they heard the news than |
| C．did they hear the news when | D．had they heard the news when |
The teacher tells his students to read the novel over and over again until they ______ it.
| A．understand | B．understood |
| C．have understood | D．have been understood |
"It’s ______ warm today, let’s go swimming."
"No, I don’t ______ to do. It’s ______ cold today.
| A．rather, hope, fairly | B．fairly, want, rather |
| C．rather, think, fairly | D．fairly, like, fairly |
----I have never heard it _____ before. And you ?
----The same as you.
| A．talking about | B．talked | C．talked of | D．being talked |
In the dark street, there wasn’t a single person _____ she could turn for help.
| A．to whom | B．who | C．from whom | D．that |