请问这个题为什么不能选keepup?TheprofessorthoughtIwasmakinggoodprogressinmystudiesandtoldmetomygoodwork.AkeepupBgoaheadwithCholdbackDcomeupwith为什么不能用A呢?

Question

请问这个题为什么不能选 keep up?
The professor thought I was making good progress in my studies and told me to _____ my good work.
A keep up
B go ahead with
C hold back
D come up with
为什么不能用A呢?

Answer 1

keep up with 才可以,表示“保持、继续、坚持”.ps：keep upTo maintain in good condition:保持良好状态：kept up the property.保存财产To persevere in; carry on:保持；继续：We asked her to stop talking, but...