50. The lazy boy got up very late and went to school in a hurry. When he arrived at school, he found that he had put his socks on _______.
| A．outside | B．inside out | C．side out | D．back out |
The settlement is home to nearly 1,000 people, many of __ left their village homes for a better life in the city.
| A．whom | B．which | C．them | D．those |
Many lifestyle patterns do such __ great harm to health that they actually speed up __weakening of the
human body.
| A．a; / | B．/; the | C．a; the | D．/; / |
-- How about camping this weekend, just for a change?
-- OK,you want.
| A． | whichever | B． | however | C． | whatever | D． | whoever |
The traffic rule says young children under the age of four andless than 40 pounds must be in a child safety seat.
| A． | being weighed | B． | to weigh | C． | weighed | D． | weighing |
Wind power is an ancient source of energywe may return in the near future.
| A． | on which | B． | by which | C． | to which | D． | from which |