井下（）使用灯泡取暖和使用电炉。
A．严禁
B．可以
C．寒冷时才能
参考答案：A
---When did you last hear ____ Jay?
---He phoned me this morning, and we agreed ____ a time and place to meet.
A．of; to
B．about; with
C．from; on
D．from; with
Jamaican Usain Bolt was reported ______the world record of 100m in 9.69 seconds, thus winning his first gold medal.
A．breaking
B．having broken
C．to be broken
D．to have broken
