When I got into the room, Green was talking _________ the phone.
I’m going to take him to some famous hutongs_______ he can learn more about China.
The online shop sells _______clothing at a very good price.
I can’t find my notebook anywhere. I’m afraid I ______it.
I think coffee tastes good, but not_______ likes drinking it.
Many cities in China, _______Beijing, have been deeply affected by dirtier air.