问题
选择题
I don’t want to express any opinions on the plan until it has been _________.
A．tried out
B．watched out
C．come out
D．let out
答案
答案：A
本题考查动词短语辨析。句意：对此计划,在验证之前我不想表达任何观点。try out试验；
watch out当心；come out出现； let out放出。