Use a modal verb to complete the proverb. Use the explanation for help:

People who live in glass houses ... throw stones. (It is not a good idea to criticize other people if you are not perfect yourself.)

Use a modal verb to complete the proverb. Use the explanation for help:

You ... have a cake and eat it. (It is not possible to have everything you want.)

Use a modal verb to complete the proverb. Use the explanation for help:

You ... teach an old dog new tricks. (Older people are not able to change their habits easily.)

Use a modal verb to complete the proverb. Use the explanation for help:

You ... make an omelette without breaking eggs. (No one is able to do anything without making a few people angry.)

Use a modal verb to complete the proverb. Use the explanation for help:

If you want something done right, you ... do it yourself. (It is necessary to do important things by yourself to control the results.)

Use a modal verb to complete the proverb. Use the explanation for help:

All good things ... come to an end. (You can't keep having good luck or fun forever. As a rule, one day it stops.)

Use a modal verb to complete the proverb. Use the explanation for help:

You ... judge a book by its cover. (Nobody is able to know what things are really like. Sometimes they are different from what they really are.)