问题
选择题
Frank doesn't want to _____ his parents _____, so he works harder than before. [ ]
A. make; happy
B. let; down
C. let; glad
D. put; up
答案
答案:B
Frank doesn't want to _____ his parents _____, so he works harder than before. [ ]
A. make; happy
B. let; down
C. let; glad
D. put; up
答案:B