Cleaners in big cities usually get------by the hour.

,c两个选项怎么一样,打错了吧.每天早晨表示很频繁,用see sb do sth 这个短语,强调看到这个状态,看见某人在做某事

B

which引导非限制定语从句修饰整个句子，如空前加连词and，应选D。

定语从句中：只用that而不用which的五种情况
引导定语从句的关系代词有：that（指人或物）,which（指物）,who (指人）.指人时可用that或who ；指物时可用that 或which ；但有时只能用that,不能用which.常见的情况有下列五种：
1） 当先行词是：all ,any ,anything ,everything ,nothing或被它们修饰时.例如：
Is there anything that I can do for you
有什么可以为你做的吗?
All that can be done must be done .
凡是能做的都必须做.
2）当先行词被形容词的最高级或序数词修饰时.例如：
That is one of the most interesting books that are sold in the bookshop .
那是这家书店出售的最有趣的书之一.
The first thing that we should do is to get some food .
我们该做的第一件事是弄点吃的.
3）当先行词有：the only ,the very ,the same ,the last 等修饰时.例如：
My necklace is not the only thing that's missing .
我的项链不仅是丢掉的东西.
4）当主句以who或which开头时,定语从句中引导词用that ,不用which 或 who .以避免重复.例如：
Who is the girl that is wearing a red coat
正穿一件红色外套的女孩子是谁?
5）当先行词既有人又有物时,用that .例如：
The writer and his novel that you have just talked about are really well known .
你刚才谈起的那位作家以及他的小说确实很著名.

A take sth for granted认为……理所当然
respect 尊敬,尊重

a用小时算工资
b因为(工作)一个小时所以拿工资
C在一个小时内
好象没这么表达

Directions: For this part, you are allowed 30 minutes to write a letter in reply to a friend's inquiry about applying for admission to your college or university. You should write at least 120 words according to the outline given below in Chinese:

up
of
into; from
for
with
onto
about
不完整


更上一层楼!/>不明白的再问哟,请及时采纳,多谢!

clean 在这里做形容词keep clean 保持干净

cleaning,clean
第一个是keep doing sth表示坚持做某事
第二个keep the city clean意为保持城市干净,clean形容词作宾补,修饰the city

难道不应有人将衣服从洗衣店里取回来吗? 暗指：为何没有自告奋勇者?

D“不得不”的意思
全句意思是：在沙尘暴季节城市清洁工不得不重复多次他们的工作.

D

on

A

C,楼上的说错了啊,past是过去的,是个形容词,这里应该用Pass,也就是经过的过去式,也就是passed,读法和past一样

选B,这里send的主语是I,不需要用被动语态.
这就是一个动词不定式,意思是我有一套游泳衣要送给清洁工.例如： I have a question to answer.

1 D 2 C 3 A 4 D 5 B

Who cuts lots of grass around the playground every day?

第二个句子是正确的,第一个有点别扭,时间状语一般都放在后面.
有不明白的请继续追问,

过去分词短语做状语修饰enter the building
例子：The japanese approached the village disguised as balu.