1. It rained heavily, and it was very kind of him to _______ his umbrella with me.
A. use B. share C. take D. bring
2. The heavy snow ______ our difficulty with the project.
A. added up to B. added C. added up D. added to
3. ----How long have you been here?
---- _________ 1990.
A. For B. In C. During D. Since
