老年性 * * 炎的治疗可在 * * 内放置少量

A．雄激素

B．雌激素

C．孕激素

D．促性腺激素

E．糖皮质激素

Mother told Jim to watch the milk until it boiled and then _____ off the gas.

A．turn

B．turning

C．turned

D．having turned