Do you like dogs——Sure.Dogs are ____ to people. They are our _____.

I’m sorry for being late, but the traffic was too heavy.–_________________.

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

1I can speak English________, I am ______ at it.

The teacher gave the books to all thestudents except _______who had already taken them