Let your child learn to be independent, for _____ he will leave home to lead his own life as a fully independent adult

Environment(环境) is very________，but you don’t understand the_______ of it，you always drop litter everywhere．

Would you come back to have dinner with us this evening — I’d love to, ______ I have an important meeting .

We have every reason to believethat ______ 2012 Olympic Games in London will be ______ success.

I _______ to the party if I________tomorrow.