The classroom dirty this morning. But now it clean.
A：was, is
B：is, was
C：were, are
D：are, were
致使水稻恶苗病的物质是 （ ）
阅读下面这首诗，完成小题。
远怀舍弟颖、观等①
杜甫
阳翟空知处，荆南近得书②。
积年仍远别，多难不安居。
江汉春风起，冰霜昨夜除。
云天犹错莫③，花萼尚萧疏。
对酒都疑梦，吟诗正忆渠。
旧时元日会，乡党羡吾庐。
【注】①舍弟：对自己弟弟的谦称。杜甫有四弟：杜颍、杜观、杜丰、杜占。②阳翟，今河南禹州；荆南，今湖北荆州。杜甫安史之乱后曾流落荆州。③错莫：纷乱昏暗。
“这一天应该作为全球停火及非暴力的日子加以纪念”。“这一天”是指（ ）
─ Do you drink much coffee as before?
─ No, at all. My sleeping problem is getting worse.
