As is known to all language learners, the newly learnt words will soon be forgotten unless they are _______ used in everyday communication.

-- Could you help me find some information on the net?--I’m occupied now. _______, I’ll do it later.

Miss Yang will teach us Chinese today ____ Mr Zhang.

Do you dress differently because of what you see in advertisements or buy things you might not ________buy？

The attempt and insistence on purchasing the Diaoyu Islands by Japan will ______ harm    China-Japan ties．