The wonderful time they had been looking forward ____ at last.
| A．to arrive | B．to arrived | C．to arriving | D．should arrive |
What the science teacher does and says ____ of great importance to college students.
| A．was | B．are | C．is | D．were |
The year 2007 ______ remarkable changes in Changzhou’s landscape.
| A．sees | B．has been | C．saw | D．had seen |
The children were catching butterflies in the garden. Some caught a lot, and others caught _______ at all.
| A．nothing | B．none | C．no one | D．neither |
How wonderful to go away for a month, _____ all worries and responsibilities!
| A．free from | B．in touch with | C．on the basis of | D．instead of |
Health officials have tried to raise _______ about the H1N1 flu among all people.
| A．conscience | B．evidence | C．evaluation | D．awareness |