When George was a little boy in primary school,he often______to school on foot.
本题考查一般过去时态。句意:当乔治还是一个上小学的小男孩时,他总是步行去学校。由于表示的是过去发生的事情,用often表示“过去的习惯性动作”,用一般过去式。故选B. went。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
免费的网站请分享给朋友吧