IT IS VERY COLD...WINTER. A. IN B. ON C. AT...

8. - 30 BAI TRAC NGHIEM VOI KEYS FOR 9 P
30 BAI TRAC NGHIEM VOI KEYS FOR 9 P

8. It is very cold...winter.

A. in B. on C. at D. of

A. on B. in C. at D. since