It took us ________ to finish the experiment on the monkey
I can't leave.She told me that I ________ stay here until she comes back.
—________ I take the book out?—I'm afraid not.
You ________ park here!It's an emergency exit.
—Will you read me a story,Mummy?—OK.You ________ have one if you go to bed as soon as possible.(2011·陕西)
One of our rules is that every student ________ wear school uniform while at school.(2012·辽宁)