_____ has your friend studied English? —Since he went to England.[ ]

Please _________ the tigers. It’s dangerous to take photos with them.—Oh, I see. Thank you.

____ present our vacations are too short. [ ]

There ________ elephants if we don’t protect them now.

Do you mind telling us something about this area?— Not at all. ________ of the land in this area _________ covered with trees and grass.