Mom , ________ I go shopping with you —Yes , you ________.But you have to finish your homework first .

Apart from the urgent problems caused by wars and conflicts， the UN helps countries with other problems such as education， starvation， disasters， AIDs and other diseases.

We have to______the costs of the new system against the benefits it will bring.

Since then the number of people who were addicted to smoking ________ 20%[ ]

22The English dictionary will be given to ______ wins the first prize