- Most rivers are polluted; _______________, we must use their water.
A. moreover B. therefore C. however D. so
- I have three sisters, _______________ are women doctors.
A. who they are B. that all of whom C. that all of them D. all of whom
ĐỀ THI THỬ SỐ 53 KỲ THI TUYỂN SINH VÀO LỚP 10