问题
选择题
Sydney promised her that he would always do anything he could for her to ____of her happiness.
[ ]
A. making sure
B. be sure
C. being sure
D. make sure
答案
答案:D
Sydney promised her that he would always do anything he could for her to ____of her happiness.
[ ]
A. making sure
B. be sure
C. being sure
D. make sure
答案:D