I can still remember that it is since the 1990’s, _____ we began to use cell phones,_______ the number of mobile users has greatly increased.
Was it from the internet_____you learned the news _____a big fire broke out in the firework factory ?
The tourists didn’t stop to rest at each station because it ______them down.
----Haven’t seen you for ages.Do you still work in Zhengzhou? ---__. It’s two years since I worked there .
Now children like to go to the fast food restaurant,_______as the name says,eating doesn’t take much time .
----I’m sorry I can’t go with you . ----_______? Haven’t you agreed ?