Spelling Bee is a contest _____ competitors, usually children, are asked to spell as many words as possible.
This is a kind of effective classroom teaching ______ students learn independently and cooperatively.
The lecture was so complex that I simply couldn’t ______ at all. Could you explain it to me?
The show opens next Monday. Between now and then we ______ it in the school hall every day.
He likes to make a list of ______ she wants to buy before shopping.
It is reported that a storm is on its way, but the weather today is ______ warm and sunny.