用适当介词填空
1 what's the matter ( with)your throat?
I have a sore throat.
2 what time shall we start tomorrow?
how(about )nine?
3 Lily studies the hardest( of )all the students in her class.
4 He flew( from )London to Paris.[from …to 从……到……]
5 It's necessary( for )you to wait for him.