—Mum,it is nice weather.I want to skate this afternoon.—Don’t you think the ice on the lake is too thin to __________ your weight?
—Thank you very much. —Not at all , I was____________ glad to help.
I would have come to see you earlier, but I __________ too busy.
With summer coming on, the weather gets hot _________.
In Switzerland, six miles west of Geneva,___________ a collection of laboratory buildings.
America was____________ was first called" India" by Columbus