——Can I walk across the road now, mum?——No, you_______. You have to wait until the light turns green.

You ______ do it if you really don’t want to.

 This blue car ____________ be Bob’s bcause his car is black.

—Listen! There is a knock on the door. Who _____ it be?—It must be Jack. Just now I sent for him.

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