It___be the postman at the door.It's only six o"clock.这里为什么要

is,it's,the,in,at,evening,time,o'clock,begin,begins,six,what Who's that at the door?____ is the postman.A.She B.This C.It It's six o'clock in the morning.he() --who's that at the door?--____ is a postman. the sun rises at about six o'clock in the morning and it set It's d___ at nine o'clock in the evening. The shop is （）now.It’s （）before six o’clock in the evening.A It's six o'clock in the evening The Greens （）(have） supper 用 was it 8 o'clock _____you heard someone _____ at the door? Was it 8o'clock -----you heard someone------at the door My mother gets up at six o,clock in the morning.(对at six o,c It’s six o’clock in the mornjng的答句