Some visitors are amazed at the fact _________ Australia is the only country in the world ______ covers a whole continent.
| A．that; that | B．what; which | C．that; whose | D．it; who |
I have no idea _______ we can do with these waste materials.
| A．that |
| B．what |
| C．whether |
| D．if |
FBI stands _________ Federal Bureau of Investigation.
| A．in |
| B．by |
| C．for |
| D．with |
His work _________ have been completed; otherwise, he wouldn't be enjoying himself on the beach.
| A．should |
| B．must |
| C．can't |
| D．shouldn't |
He wondered __________ the pyramids were built.
| A．what |
| B．that |
| C．if |
| D．how |
He insisted that he __________ and that he ________ nothing wrong.
| A．be set free; should do |
| B．set free; should do |
| C．should set free; had done |
| D．be set free; had done |