______ on-going division between English-speaking Canadian and French- speaking Canadians is ______ major concern of the country.
| A．The; 不填 | B．The; a | C．An; the | D．An; 不填 |
For environmental reasons，we _______as well take these waste products and have them recycled.
| A．shou1d | B．would | C．might | D．could |
The film Avatar will be on tonight but it’s at l：30am. I don’t want to ________that late.
| A．stay up | B．show of | C．put up | D．get off |
. It never occurred to humans until the mid-l990s _______some animals can be cloned.
| A．where | B．that | C．when | D．what |
The red flag looks extremely beautiful _______the blue sky and white clouds.
| A．through | B．against | C．across | D．beyond |
The Internet and the effect _______brought about did a lot of good to our daily life and work.
| A．that | B．what | C．which | D．it |