— Must I turn off the gas after cooking?— Of course. You can never be________ careful with that.
下面属于元音字母的是________.
与r相邻的字母是________.
--- If I_______ one million dollars, I would give it to medical research. ---If I _______ you, I would give it to charity.
I like singing and ________ Tom.
Helen ________watch TV at home _______ hang out with her friends.