In their efforts to persuade us to buy that product, shopkeepers have made a close study of human nature and have_______ all our little weaknesses.

Historically, __________main material for making tables has beenwood, but__________metal and stone have also been used.

Do you like rock music , Ann — ________ . It’s too noisy to me .

It is a pity that the industrial cities _____ in thenineteenth century do not attract visitors.

Do you think their table tennis team will win the first place at the coming Asian Games—- _______. Ours is much stronger than theirs.