You can visit Hong Kong in ______ season because there are many modern shopping malls there.

Sean has formed the habit ofjogging________ the tree-lined avenue for two hours every day.

How is life in the countryside?—Life is quiet and peaceful here. Nothing else can _______ a walk in the country road after sunset.

In my opinion, all Mr. White ___ good to his students in his class at present. He is very strict in their study.

_____ to nuclear radiation, even for a short time, may produce variants (变异体) of genes in human bodies.