Ⅰ.单句语法填空
1．________ really matters is that she wore a pair of white shoes.
2．Go and get your coat. It's ________ you left it.
3．There're so many kinds of tape recorders on sale that I can't make up my mind ________ to buy.
4．What the doctors really doubt is ________ my mother will recover from the serious disease soon.
5．________ we'll go camping tomorrow depends on the weather.
6．________ he said at the meeting is very important to us.
7．This is ________ he was often late for school.
8．We all know the truth ________ the earth moves around the sun.
9．________ I can't understand is ________ he changed his mind.
10．After five hours' drive, they reached ________ they thought was the place they'd been dreaming of.
