Ⅰ.单句语法填空
1．—Haven't seen you for ages! Where have you been?
—I went to Ningxia and ________ (stay) there for one year, teaching as a volunteer(志愿者)．
2．We are looking for someone who is ________ (rely) and hard－working.
3．In order to give his fans a deep impression, the singer was ________ (dress) in a well－designed suit.
4．In Disneyland, every year, much of the grass is replaced because Disney refuses to put ________ signs asking his visitors not to step on them.
