How’s your new babysitter?We ________ask for a better one , all our kids love her so muchA should b might c mustn’t d couldn’t
----I’m going to the United States. ---- How long ____you ____in the States ?
He often helps the students _________he thinks are not quick at their studies.
This painting of his had been ____________ by some experts of the world.
My sister has become a nurse, ___________ was what she wanted to be.
As I know, there is _____ person in this neighborhood.