1.there was a steady i___ in population .
increase
2.eighty p___ of the students in our school come to school by bike .
percent
3.the p___ of china is about one billion ,three hundred million .
population
4.a c___ gathered at the square .
crowd
5.i have to leave now ,because i have an a___ with my friend .
appointment
6.s___ is bad for your health .
smoking
7.go a___ the road and you'll find the shop at the end of it .
along
8.there are sixty m___ in an hour .
minutes