2, Columbus and his crew arrived ________ wasso-called the New World by the westerners.

______to the Internet ,as many adolescents do ,will to some extent have a negative effect on their mental and physical health .

The man fell to the ground, his left foot_____ and blood ____ down from his mouth.

Everyone except Tom and Mike Kunming before.

The man we followed suddenly stopped and looked as if ________ whether he was going in the right direction.[ ]