The farmers built long fences, __________ keeping the wild dogs out of them.
| A．aim at | B．aim for | C．aiming at | D．aimed for |
It was the middle of the night_____ my father woke me up and told me to watch the football game.
| A．that | B．as |
| C．which | D．when |
—Is the chemistry experiment easy? —______. I’ll just do my best.
| A．I think so | B．Certainly |
| C．Not a little | D．Anything but |
The number 5.12 is a special number,__ ,I think, that will be remembered by Chinese people forever.
| A．what | B．it | C．which | D．one |
The country has already sent up three unmanned spacecraft, the most recent__at the end of last March.
| A．has been launched | B．having been launched |
| C．being launched | D．to be launched |
_____ for his action on the playing field, but he is also famous for the things that he does off the playing field.
| A．Not he is only known | B．Not only is he known |
| C．Only is he known not | D．He is only not known |