He always studies hard lest he (lag) behind,为什么是lag原型?

He studies hard and always does his homework He always studies hard lest he (lag) behind,为什么是lag原型? Jim studies very hard.He always gets to school f_____ at around six thirty the boy does not do well in his studies,so he is always nervous before t___ He studies science ( )he studies it hard He studies hard_____good grades He studies English well He studies hard. He studies hard. He always studies () his own at homeA.in.B.to.C of.D.on我觉得是c, 感叹句he studies very hard he studies very delicious感叹句 He always concentrates on his studies ,and never gets tired of learning.So he often comes in first in exams.这里的come in HA RA HE TA DE he is good at studies.studies.为什么加s. Peter is very clever and he studies hard as well． ---No ______be always wins first in the examinati为什么选D Li Lin is very bright and studies hard as well.It's no (wonder) he always gets the first placein any examination.括号内为什么不能是doubt? He always devotes his time to helping children with their studies rather than_ games on computer.A.play B.playing哪一个,为什么?