某元素原子的最外层只有2个电子,则该元素( )
Everybody was touched _____ words after they heard her moving story.
One of the most important questions they had to consider was _____ of public health.
Encourage your children to try new things, but try not to ___ them too hard.
The computer was used in teaching. As a result, not only__________, but students became more interested in the lessons.
The children all turned ____ the famous actress as she entered the classroom.