从下列词组中选择填空
词组：have taken place,
open up,
get on with,
am locking foward to.
1 When my friends meet me,they always ask same question:How do you ______your study?
2 Many great changes _______in his hometown since he left twenty years ago.
3 Now we know it's necessary to _______the western part of China.
4 Please write back soon and tell me about your life ,I _____hearing form you.