问题
选择题
Tom looked upon the test as an obstacle _____ his classmates regarded it as a challenge. [ ]
A. while
B. because
C. unless
D. if
答案
答案：A
搜题请搜索小程序“爱下问搜题”
Tom looked upon the test as an obstacle _____ his classmates regarded it as a challenge. [ ]
A. while
B. because
C. unless
D. if
答案：A