Whose  book  is that ?It   _______belong to Linda .Look !Her name is on it .

We   have bought so much food now that Suzie won’t be with us for dinner.

It ______ be the postman at the door. It’s only six o’clock.

(2013·安徽师大附中高三七模)Don't use water to put out the fire if oil catches fire. As is known, oil ________ float on water.

I still remember my happy childhood when my mother ______ take me to Disneyland at weekends.