At minus 130℃, a living cell can be ______ for a thousand years.
| A．spared | B．protected | C．preserved | D．developed |
There is------in his words. We should have a try.
| A．something | B．anything | C．nothing | D．everything |
George said that he would come to school to see me the next day, but he ______.
| A．wouldn’t | B．didn’t | C．hasn’t | D．hadn’t |
You might wonder how it________to live without eating for so many days.
| A．keeps | B．Succeeds | C．manages | D．tries |
One learns a language by making mistakes and ______ them.
| A．corrects | B．correct | C．to correct | D．correcting |
By the time you have finished this book, your meal ______ cold.
| A．gets | B．has got | C．will get | D．is getting |