If we want ______much cleaner world, we should reduce _______ emission of carbon dioxide.
| A．a; a | B．a; / | C．a; the | D．the; / |
--- Jim failed again in the maths examination.
--- Don't scold him too much. _____ , he has tried his best.
| A．After all | B．Above all | C．At all | D．In all |
. The conference has been held to discuss the effects of tourism ______ the wildlife in the area.
| A．in | B．on | C．at | D．with |
The International Red Cross is ______ non-profit organization that cares for the wounded, sick and homeless in wartime, and victims of _____ natural disasters.
| A．the; the | B．a; the | C．the;不填 | D．a; 不填 |
We all do more speaking ___________, even when we have a break after class .
| A．now and then | B．by and by | C．step by step | D．more or less |
Zhang Hong is said___________by heart 2000 words up to now .
| A．that she has learned | B．to have learned |
| C．to learn | D．having learned |