【B5】
A. run out
B. run of
C. run out of
D. run away
Which of the following is the best title?
A. Keep Away from Sudan 1
B. No Sudan 1 Dye Links to the Country
C. How Sudan 1 Dye Got Its Name?
D. Pay Attention to the Food Safety
【B18】
A. by a smile
B. with a smile
C. by smile
D. with smile
【B17】
A. starting
B. to start
C. start
D. started