-When were you at church?回答可以用 -I was on January 可以把其中的at church省略

问题描述:

-When were you at church?回答可以用 -I was on January 可以把其中的at church省略

可以,前文有提及到,就应该能省略.
不要怕辛苦,练练字也可以,写上也无妨