We should all remember that some great scientific discoveries _____________ by chance.
| A．gained | B．discovered | C．occurred | D．earned |
Thinkingyou know in fact you don’t know is a terrible mistake.
| A．that, that | B．what, what | C．that, what | D．what, that |
There are many idioms used in English _____ quite a few of them come from the Bible.
| A．that | B．which | C．and | D．but |
In the past few years, My Heart Will Go On was a popular song among young people, were often heard singing it at parties.
| A．who | B．which | C．they | D．that |
Idioms are used all the time and unless you recognize when an idiom is being used, what you read or hear ______ can easily be misunderstood
| A．spoken | B．speaking | C．speak | D．be spoken |
Mr. Smith went to a bookstore, where a lot of books were .
| A．produced | B．invented | C．housed | D．disappeared |