He always studies hard lest he (lag) behind,为什么是lag原型?
rank与lag behind比较
lag behind ;;what mean 翻译过来
He studies hard and always does his homework
He studies science ( )he studies it hard
感叹句he studies very hard
kim always studies english very hard.so he always ____in the
observation lag,administration lag,effective lag分别是什么
Jim studies very hard.He always gets to school f_____ at aro
Jet lag 什么意思?
jet lag 什么意思
implementation lag是什么意思
谁有lag啊?