As a science lover, I hope I can invent a bike ________ can fly in the sky.
where
when
which
who
--Would you like some tea? --Yes, please. By the way, do you have any milk? I prefer tea_______ milk.
--Do you know the man with a pair of sunglasses is? --An actor, I think.
My hair needs ________ , I have to have it ________.
Ted together with his friends had a good time when hiking,?
In the last few years, great changes _________to her, she is not the one that used to be.