The famous actor is familiar ________ us, but it is a pity that he is not familiar ________ me no matter how deep I love him

You look . Can you tell me why you are so happy—Sure. I saw an movie just now. I have great fun.

Often he______ sit for hours doing nothing at all when he was in low spirits.

Mother was in the kitchen ______ lunch while I was ______ the coming exam.

______ mountains of homework，students today are busy with all kinds of activities.