with the size of the whole earth,the biggest ocean does not seem big at all [ ]

It will take a lot of time to______what I really want to do in the future, I think.

Jane helped me with my work last week when I asked for leave______, I’ll invite her to have dinner with me

.My mother ______ live in the country by herself, but now she got used to ______ together with us in the city.

How can they learn much ________ they spend so muchtime playing computer games