.(江苏卷34). George is going to talk about the geography of his country, but I’d rather he_______ more on its culture.
Since Tom ______ downloaded a virus into his computer, he can not open the file now.
He began to take political science ____ only when he left school.
She devoted herself ______ to her research and it earned her a good reputation in her field.
The committee is discussing the problem right now. It will_____ have been solved by the end of next week.
一Have you handed in your schoolwork yet? 一Yes,I have.I guess it _____ now.