Though it was very late, they _______their discussion.
Could you please translate this material _____ Spanish?A. in B. with C. into C. on
I couldn’t ____. The line was busy.
The conference has been held to discuss the effect of tourism(旅游业) ___ the wildlife in the area.
Sandra was a student ____ the age of 21.
Scientists say they are beginning to _____ in the fight against cancer.