Just as Professor Scott often________it，success is ninety­nine percent mental attitude.

My watch _____ at nine o’clock, but now it _____.

—What’s the noise outside?—Some children_____ hide-and-seek in the yard. 

--- Who are you e-mailing?--- My cousin who ________ to Fudan University the year before last year.

We can’t _____to wait any longer or we’ll miss the plane.