Scientists are convinced _____ the positive effect of laughter _____ physical and mental health.[ ]

Last Sunday was Mr. Wang’s birthday. Heinvited a lot of people ________.

___ only takes about fifteen minutes to get to the station by car.

. Miller, this is Ruben Holmen calling again. You had said I should call this week to schedule an interview with you.— ________, why don’t we say next Monday at 11:30 a.m.

Which is your teacher—The one________thick（厚的）glasses over his eyes．