英语翻译a.keep in touch __________b.in case __________c.look for

英语翻译
a.keep in touch __________
b.in case __________
c.look forward to __________
d.get ...into trouble __________
e.a number of __________
1.We __________ the return of spring.
2.The bookshop is very popular and __________ people go to buy books there.
3.It is important to __________ with your parents after leaving home.
4.Can you provide me with one more pen __________ this one doesn't work?
5.The heavy rain last night __________ the whole project __________.