My teacher used to _______ a bike to school, but now he is used to ________ a car to work.
--_______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 ________.