--- Are you going to buy a camera ? --- Yes. But there’re so many kinds that I can’t decide ____ to buy.
This is ______ English book, and ______ book is very good.
下列字母中全部是元音字母的是__________.
下列字母中与字母D含有相同音素的是_________.
--- I feel really tired. --- ________
________, or you'll be late for school.