The world today different without the amazing discoveries produced by great scientists.
| A．were | B．had been |
| C．would have been | D．would be |
.
— Would you mind accepting me as your member?
— Of course not. We ___ anyone if he obeys our rules.
| A．bring in | B．result in | C．turn in | D．take in |
.
–Finished the novel? How do you find it?
–_______ It’s worth reading a second time.
| A．I didn’t get that. | B．It’s totally fascinating! |
| C．A friend lent it to me. | D．I bought it from the library. |
.
–How did you know the surprising news?
–I happened ______ the event then.
| A．to be covering | B．to cover | C．covering | D．to have covered |
.
The house caught ______ fire while they were away. It must have been set ______ on fire by someone.
| A．a; a | B．a; / | C．/; a | D．/;/ |
.
_______ the argument sounds reasonable, it still needs support of evidence.
| A．Since | B．Whether | C．Although | D．As |