Complete the following sentence with a (compound) word derived from the one(s) given in bracket.
It is ( ) whether we can finish this task in time.(question)
【正确答案】:QUESTIONABLE
【题目解析】:
本题考查的是常用名词的形容词。
由is可知空格处应填形容词,question的形容词是questionable有疑问的。
句意:我们是否能按时完成任务还不能确定。