Tom ________ two of his classmates ________ invited to the party.

Not only my friends but also I _______ interested in football and Messi is our favorite star.

The box of rubbers ____ white. 

— Why does the lake smell terrible?— Because large quantities of water ____.

We live day by day，but in the great things the time of days and weeks ____ so small that a day is unimportant.