I’VE BEEN HERE……… 10.30. A. FOR B. AT C. SINCE D. ONIV. REWRITE, KE...

4. - KIEM TRA ANH 9
KIEM TRA ANH 9

4. I’ve been here……… 10.30.

a. for b. at c. since d. on

IV. Rewrite, keep the meaning unchanged: (3ms)