评论
打印
1. I am not sure whether I want to take this course；_______________（我第一周可否旁听）to see if I like it？
2. The police are on the trail of new evidence _______________（希望能有助于该案的处理）.
3. The volume of trade between the two countries，as is reported，________________（增长了三倍多）.
4. My question is _______________（谁将接任该基金会主席职位）.
5. He looks honest，but ________________（外表有时是靠不住的），aren’t they？
