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

Nearly half a million immigrants，many of them English—speaking，     in the country during the last quarter of the nineteenth century．

If I ___ free tonight, I'll go to the cinema with you.

—Did Betty go shopping with you yesterday? —Even if she _____ a lot of studying, she would have preferred staying home to going shopping．

With the rapid development of medical science, we ___ more new drugs used in the treatment of cancer．