Lisa, what do you think of the job of being a nurse— In my opinion, it ________ be difficult sometimes though it seems easy.

I ________ ride a bike to school. But thismorning I took a taxi because I got up late.

The number of the workers in this factory _______ two hundred.

He has written a lot of books, but ______ good ones.[ ]

It will be one of the nations worst ________by climate change, as two fifths ofthe country isbelow sea level[ ]