make 可以當使役動詞為"讓..."的意思
後面接原形動詞。
在這裡為"被動語態"
The candidates for the job were made _____ for half an hour.
be.v+made後放不定詞to即為被要求的意思。
20. The candidates for the job were made..-阿摩線上測驗