Please don't hesitate to let me know ___
题型:选择题
问题:
Please don't hesitate to let me know _____ you need something. [ ]
A. even though
B. as though
C. in case
D. so that
Please don't hesitate to let me know _____ you need something. [ ]
A. even though
B. as though
C. in case
D. so that