—We should do what we can ________ the endangered animals.—Yes, it’s our duty_________ them.
The number of chairs in the room __ ten. I’m afraid a number of chairs in the room ___ lost.
—Have you ever seen the movie called Los Angles 2011?—Yes, but I think it’s ______. I fell asleep when I saw it.
The murder happened _______ between nine and eleven last night.
you practice your English every day, you won’t make any progress on it.
——Do you know________?——This afternoon.