Poor speaker of English though he was at the time, he still managed to make himself ________.
A. understand
B. understood
C. understanding
D. to understand
In international matches, prestige is so important that the only thing that matters is to avoid _____.
A. from being beaten
B. being beaten
C. beatin
D. to be beaten
参考咨询系统的构建原则包括:坚持以人为本、坚持服务至上、坚持分工与协作结合、()