I was late for school today ______ I didn’t catch the early bus.

____ 1960s, ________ number ofhabitants here is very _______ ,and it was since the middle of 1970s that thepopulation has been increasing rapidly

My name is jack Smith. Please call me_______.

Why not stay at home the road is so slippery after the heavy snow? [ ]

They began to think about what use could be _______ such materials.