Allwewanttodo______tofindenoughwater_______thehorses.
Theforeigners_________there,butthey_________thefoodthereatfirst.
____beforewedepartthedayaftertomorrow,weshouldhaveawonderfuldinnerparty.
Mr.Greenisusedto_________twoapplesafterluncheveryday.
Thefirststepinthestudyofanylanguageisobservingand____preciselywhathappenswhennativespeakersspeakit.
邮箱：