—What ______ the number of the students in your school?—About two thousand. A number of them _____from England.
—What will the weather be like tomorrow? —It _______ be rainy, cloudy or sunny. Who knows?
—_______ are you leaving for Shanghai? —In a couple of months.
—This is _______ fascinating museum I have ever visited. —Yes. I’ve never seen a _______ one.
Stephen Hawking thinks _______ important to have hope in bad situation.
Robert is away. He _______ America since last week.