___ more attention, the tree may grow better.
| A．Give | B．Giving | C．Given | D．To give |
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 |
His writing is so confusing that it’s difficult to make out ________ it is he is trying to express.
| A．that |
| B．how |
| C．who |
| D．what |