He________ if he is free.

I really appreciate______ time to relax．-I don’t doubt ______ able to do so．[ ]

Jane, why are you so happy—The hen I keep for half a year ________an egg yesterday.

ingChina-US differences on human rights issues, Hong said the two sides canenhance mutual understanding through dialogue ______ on equality and mutualrespect.

Although Nancy and Lily act differently, they remain .