Each year in the United States, many black teenagers _______ of school, either because they cannot keep up or they have to work to support their family.
A、gooutB
暂无解析
We must ______ that the experiment is controlled as rigidly as possible.
The association is ________ to raising funds to help the blind.
Let'sdrink_______Dicks'successinbusiness.
Wemust______thattheexperimentiscontrolledasrigidlyaspossible.
A baby might show fear of an unfamiliar adult, _______ he is likely to smile and reach out to another infant.
