Dogs have a very good ______ of smell and are often used to search for survivors in an earthquake.
27.To tell you the truth,the accident and the damage______resulted in frightened me so much that I almost have given up driving ever since.
26.—Is there anything I can do for you?—There seems to have been a technical problem—______,that's what they told me.
25.From________seemed to be a great distance,he smiled at her,and she smiled,too.
24.—Mind if I sit here?— _________.
23.—Artistic people_________be very difficult sometimes. —Well,you should know you married one.