When the door bell ________I was listening to music.
--_______David be the new chairperson of the Birdwatching Society ?--He ________be, but I’m not certain about it.
Very few students spent as much time ______ Amy did ______English.
The girl is very smart, but I don’t think the maths problem is _________ for her __________?
– _____ do we call that bird in English?--Which one? There are two. Do you mean the one with ___________neck?
Some wild animals will do everything they can to protect their families if there’s ________.