30. This dictionary is of great use, which can help you_________many problems about words and idioms.
This program can give you a lift at work, ____ increase your income by 50%.
Nowadays food safety is a big problem and nobody can guarantee all foods are safe to us, but food produced in the normal companies is ______ better.
Some children want to challenge themselves by learning a language different from _____ their parents speak at home.
–Amazing! You ______come to the party in such a fancy dress. __ Do’t you know it’s a fashion?
—I think Maths is playing a more important part in the new test system. What about you? —________. We should be more devoted to it.