For thirteen years after his return from Europe, ______.

单项选择题Are you going to leave______

单项选择题You said the books were on the desk, but______there.

单项选择题Professor Li helped a lot of graduates, many of______later were successful in their fields.

单项选择题—Julia was angry with me. —I am afraid so, but you______have talked with her in a different way.

单项选择题Jack contributed fifty dollars, but he wishes he could contribute______.