邀请同学一起走，你可以说：___________________________________________
A．Let's sing. B．Let's go. C．Let's play.
My studies in primary school ________ coming to an end.
A．is B．are C．am
Koalas live in________．
A．Australia B．Africa C．Italy
We should________the lights when we go out.
A．turn into B．turn on C．turn off
There ________ some juice in the bottle.
A．is B．be C．are
I________to Dalian last week.
A．go B．going C．went