English lesssons are usuaiiy _____ the morning.A,in B,on C,/

问题描述:

English lesssons are usuaiiy _____ the morning.A,in B,on C,/

A
in 和 on 都有“在”的意思,表示时间.但 in 表示在某一时间段.如 in winter,in the evening
on 表示在具体某一天.如 on Sunday,on Children's Day.