1 . The reason for his absence was _______ he was ill in hospital. （在句子的空白处填入适当的引导词。）

2 . 假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；

2. 只允许修改10处，多者（从第11处起）不计分。

China and Western country may have different cultural beliefs about certain animals. But when it comes to pigs, we somehow reach an agreement that pigs are lazy, ugly, stupidly and shameless. Neither of these words describing pigs are exactly positive. Moreover, the truth is what pigs have some good qualities. And there’s probably no good time to clear their names than now, with the arrival of the Year of the Pig on Chinese Spring Festival, which fell February 5 this year. According to a paper publishing in 2017, pigs can tell between those who treat them well or those who don’t. Perhaps these are the qualities of pigs to keep it in mind—their intelligence, cuteness and patience.

3 . —I drove to Zhuhai for the air show last week.
—Is that ______________ you had a few days off?

A．why	B．when
C．what	D．where

4 . _______ is expected, according to the online survey, is _______ the price of housing will not go up any more.

A．As; what

B．It; that

C．What; that

D．What; which