1. This is the washing machine ______ we have had so much trouble.
A.as which B.with which C.of which D.in which

2.Something must be done immediately if these wild animals ____ saved.
A.will be B.were C.are about to be D.are to be

3.Rose made ____ to visit her parents once a month, but she didnot keet it.
A.an offer B.a decision C.an effort D.a promise

4.Not until very late that afternoon ______ the news that his daughter won the match.
A.did the father get B.the father got
C.the father did got D.got the father

5.Jack ____ to pass the examination at his second attempt
A.succeeded B.completed C.realized D.managed

为什么选这个不选其他？
可以解释解释吗？

谢谢

2.be to do 结构这里表示强烈意愿。
如果我们要挽救这些野生动物，就必须立刻采取行动。

1题zhixiaowu说对了
3.题make a promise“许下诺言” 和keep a promise“遵守承诺”都是固定词组。（it只能代指promise，才同时与两个词组搭配）
“罗斯许诺说要每月看望父母一次，结果没有兑现。”
make an offer主动提供/说
make a decision做出决定
make an effort做出努力
4.A正确。not until开头属于否定词位于句首，句子主谓语要倒装，就是把助动词，系动词或情态动词提到主语前面。
“直到那天下午很晚的时候，父亲才得到女儿比赛获胜的消息。”
5.选D正确。
A.succeeded in doing 成功的做了某事
B.completed sth完成某事
C.realized sth意识到某事
D.managed to do设法做成了某事
“杰克努力在第二次尝试后通过了测试。”