Ⅰ.单句语法填空
1．They found an abandoned(abandon)cottage in the wild mountains.
2．Can't you look where you're going？You nearly knocked me over!
3．It suddenly occurred to one of the workers to open(open) up the box.
4．I think these interesting old customs should be preserved(preserve)．
5．Upon hearing the funny story，everybody burst into laughter(laugh)．
