IT IS DANGEROUS _______________ IN THIS RIVER. A. SWIM B. SW...

4. - BAI KIEM TRA TIENG ANH 6 THI DIEM 45 LAN 3
BAI KIEM TRA TIENG ANH 6 THI DIEM 45 LAN 3
4. It is dangerous _______________ in this river. A. swim B. swimming C. to swim D. swam