People have always been ________ about exactly how life on earth began.
| A．curious | B．excited |
| C．anxious | D．careful |
The construction of the gym caused much noise,it difficult for people nearby to sleep.
| A．made | B．to make | C．making | D．having made |
She won’t be able to come next week, because she herself in Mount Tai then.
| A．enjoys | B．will be enjoying | C．is enjoying | D．enjoyed |
When a student asks it is worth staying up doing their lessons, a teacher may find it difficult to answer.
| A．that | B．what | C．whether | D．how |
from Adelaide to Darwin and you’ll observe some of Australia’s most beautiful landscapes.
| A．Traveling | B．To travel | C．Traveled | D．Travel |
It is in the year of 2010a severe drought hits Yunnan province.
| A．until | B．that | C．before | D．when |