_____ is believed that the better­known companies spend about 70 per cent of the total cost of the product itself on packaging!

Try hard to make what the teachers teach ___, and you’ll make rapid progress in your studies.

Use your head; nothing taught by others can have the same effect on you as _________learnedthrough practice.

Sarah decides to move to Hainan because she thinks that the air there is much fresher than ___ here.

Friendship will not come to you naturally when you show ____to others.