－What arethese－Theyare_________.

What ‘s the matter with you? — You _____ my heart- — But I didn’t mean to hurt you

The government has decided to give preference to thoseenvironmently-friendly business and companies in all aspects in _______ ofsustainable development.

Why didn’t you answer my phone call, Jack— I’m sorry, but I ________ at that time.

Tom is taller than _____ in hisclass.