Can you tell——?A when it happed B when it was happed为什么选AWe won't_英语解答

Can you tell——?A when it happed B when it was happed
为什么选A
We won't allow smoking in the cinema 为什么用smoking

人气：408 ℃　时间：2020-02-04 08:06:14

解答

发生是it 代指的事物主动发生不用被动而且happen 也没被动形式
allow 不加人的话直接+ing
你说的是 allow sb to do