There is no hard evidence ____ aliens took Justin that night.
| A．that | B．what | C．which | D．how |
American women usually identify their best friend as someone _____ they can talk frequently.
| A．who | B．as | C．about which | D．with whom |
George Orwell, _______ was Eric Arthur, wrote many political novels and essays.
| A．the real name | B．what his real name | C．his real name | D．whose real name |
_______ get such a book?
| A．Where do you think can I | B．Do you think where can I |
| C．Do you think where I can | D．Where do you think I can |
Is this the reason _______ at the meeting for his carelessness in his work?
| A．he explained | B．what he explained | C．how he explained | D．why he explained |
1Mary was always singing high praise for her role in the office, _______，of course,made her colleagues unhappy.
| A．who | B．which | C．this | D．what |