Must I do my homework now, Mum? —_______. You can do it tomorrow.

Over the past decades, sea ice ______ in the arctic as a result of global warming. [ ]

The book is for the students ___ native language is not English.

What ________ if there ______ no water or air on theearth

Whose shirt is this Is it Tom’s — No, it isn’t. _______ iswhite.