Mum, ________is my friend, Tom. Tom,_______ are my grandparents.

You will have an accident if you don’t ______, for the road is icy.

_ is the strength of union that allthe dilemmas, if any, can be dealt with.

One-third of the area ________ covered with trees. About seventy percent of the trees _______ been planted recently.

Why can’t you answer my question? I gave you some tips just now—–SorryI ______a magazine