英语翻译在我十岁的时候我已经学了900个英语单词I_____900 English words by the time
英语翻译
在我十岁的时候我已经学了900个英语单词
I_____900 English words by the time I was ten.
我爸妈昨晚到家前,我已经把饭煮好了
By the time my parents _____ yesterday,I_____ the dinner already.
他入伍以前已经在那家工厂作了三年
He _____ in the factory _____ he joined the Army.
上周之前他们完成大桥(竣工)
By the end of last week,they_____ the bridge.