64 Why did you ask him for help instead of Jim? He is_______helpful than Jim

Reportedly, yesterday a group of American soldiers were walking along the road in Iraq when a bomb was _______, three of whom were killed．

Are you cleaning your room–________ I ’m listening to a CD．

Shall we go right now, Frank— It’s too late, tomorrow will be time for us to visit her.

Do you know him—I’m sure I’ve seen him _____, but I can’t remember the right place.