Ⅰ.单句语法填空
1．The empty boat ________(drift) out to sea.
2．We heard about the news that an earthquake struck Ya'an ________ the media.
3．They ________(befriend) the young girl and provided her with food and shelter.
4．The students can ________(discourage) if the exam is too difficult.
5．Tom will be in charge during my ________(absent)．
