新疆的瓜果特别甜，主要的原因天气干旱。
参考答案：错
---What made him so upset?
-----_________
A．Failing in the test
B．He failed in the test
C．Because he failed in the test
D．To fail in the test.
行政执行时指挥必须按照层级体系进行。（）
