You are the most clever and hard-working woman I have ____ seen , but you should spend more time with your children.

The word ubiquitous in Paragraph 2 is most likely to mean ____.

A.very crowded

B.very clean

C.existing everywhere

D.occurring frequently

A: Could you spare a few hours to help me clean the house？ B: ______.

A．No, the house is clean.

B．Nobody could help you.

C．No, you should rely on yourself.

D．I'm really busy with school these days. How does this Saturday sound？

We must make () that the goods were packed in gunny bags of 50kgs net each.

A．clear

B．it clear to you

C．clear to you

D．it is clear

A.The difference in designing underground subway stations can be clearly seen between these two approaches.

B.These two underground subway station designs clearly demonstrate the possible degree of variation.

C.You can clearly distinguish the difference between these two approaches to designing underground subway stations.

D.We can see the difference between these two approaches to designing underground subway stations cle

A.The more

B.make

C.the most

D.spend

If you are wandering through the busy streets, which will most attract you？

A．Various buildings

B．Car driving

C．Window-shopping

D．Free walking