问题
选择题
Dad, my computer is broken. Must it _____ now?
A．is repaired
B．has been repaired
C．be repaired
D．has repaired
答案
答案：C
题目分析：句意：爸爸，我的电脑坏了。它必须现在修理吗？It指代电脑，它与repair修理是被动关系，要用被动语态，系动词be+动词过去分词；句中有情态动词must，所以be要用原形，故选C。
