The ability to store knowledge makes computers different from every other machine _____ invented.
| A．ever | B．thus | C．yet | D．as |
Playing QQ’s “Happy Farm” by planting, watering, fertilizing, spraying, harvesting and selling of virtual vegetables, fruits and flowers, we can find out _____ all the excitement is about.
| A．that | B．if | C．what | D．when |
A giant helium(氦) balloon is telling residents of Paris how good or bad the air quality is. When it’s good, the balloon ----measuring 22 meters wide and 32 meters high---shines green. _________, it’s red.
| A．Though terrible | B．Whenever good | C．If worse | D．When bad |
Sustainable development is long-term ________which focuses on the environment and ________ natural resources.
| A．plan; preserve | B．plan; preserving |
| C．planning; preserving | D．planning ;preserve |
My plane at 8:30 am, so Ihome at 8:00 tomorrow morning.
| A．leaves; leave | B．leaves; am leaving | C．is leaving; am leaving | D．is leaving; leave |
It is the third time that she ______ the role of Juliet ever since she graduated from university.
| A．has played | B．had played | C．is playing | D．played |