People celebrate Chinese New Year __________ from house to house.[ ]

My home is in that tall building over there.　—　　　　　 ?

She has got two cats now. ______ black and white one is called Rosie and ______ brown one Joseph.

I found ___________ hard to remember all the twelve star signs because they are difficult to pronounce(发音) and spell.

Betty’s brother isn’t old enough to look after ____.