MY SISTER IS VERY KEEN ON SWIMMING, AND SHE GOES SWIMMING THREE ____...

2. - BAI KIEM TRA LOP 7 LAN 1
Tiếng Anh BAI KIEM TRA LOP 7 LAN 1
2.My sister is very keen on swimming, and she goes swimming three ______ a week.a.time b.a timec.times d.timings