1.-Lydia,what did our head teacher say just now? -Every boy and every girl as well as the teachers who_____to lead the group______asked to be at the school gate before 6:30 in the morning.( ?。?/h2>
2.The university estimates that living expenses for international students ________ around $8,450 a year, which ________ a burden for some of them.( ?。?/h2>