It is not clear what, if________, we can do to improve this situation.
| A．something | B．everything |
| C．anything | D．nothing |
You can’t imagine ________ when they received these nice Christmas presents.
| A．how they were excited |
| B．how excited they were |
| C．how excited were they |
| D．they were how excited |
No one can be sure _______ in a million years.
| A．what man will look like |
| B．what will man look like |
| C．man will look like what |
| D．what look will man like |
________ the decision must be made immediately requires questioning.
| A．That |
| B．If |
| C．When |
| D．Whether |
_______caused the accident is still a complete mystery.
| A．What |
| B．That |
| C．How |
| D．Where |
________ we can’t get seems better than _______ we have.
| A．What; what |
| B．What; that |
| C．That; that |
| D．That; what |