他有时候很调皮,但是他从不顶撞他的老师.
Sometimes he is very naughty,but he never his teachers.(talk)
别灰心,再试一次。
.Try it again.
Yuan Longping,one of (最伟大的科学家),made important contributions to the world.
(让我惊讶的是),Nancy did well in the school sports meeting.
(在……帮助下)the local firemen,we learned some fire safety skills.
Many people were touched by the film Hi Mom.It (值得观看).