Ⅰ.用正确的引导词填空
1.I can’t decide dictionary I should buy.
答案:which
2.That’s he refused my invitation.
答案:why
3.China is no longer it used to be.
答案:what
4.I am very interested in he has improved his pronunciation in such a short time.
答案:how
5. we need is more time.
答案:What
