用所给词的适当形式填空
【小题1】David would succeed along the career ladder one day, I ________(firm) believe, if he should devote more energy to it.
【小题2】In ________(conclude), people around the world should be aware of the real situation of water shortages.
【小题3】If I’m not ________(mistake), that’s the same purse that I lost yesterday.
【小题4】To her ________ (embarrass), she didn’t remember his name when meeting him again.
【小题5】When evening ________ (gentle)sweeps the hillside into orange, the rivers can turn into a stream of gold.
【小题6】The birth of my young brother was a minor ________(interrupt) to my mother’s career.
【小题7】I found it hard to follow what the teacher was saying, and eventually I lost ________(concentrate).
【小题8】________(nod)your head up and down means “yes”.
【小题9】We’ve had a few ________(disagree), but we’re still good friends.
【小题10】It’s ________(polite)to point to or talk about strangers in public.