Where ________the bike repaired?

[　　]

A．had he

B．did he get

C．he got

D．he gets

The United Nations, ________ has its main head-quarters in New York City, is a very important world organization.

[　　]

He is friendly to those ________ work under him.

[　　]

She is the only one of the students ________ good at spoken English in our class.

[　　]

A．whose is

B．whose are

C．who is

D．who are

She is one of the students ________ good at spoken English in our class.

[　　]

Now I know the reason ________ he didn't come then.

[　　]

That's the classroom ________ he once studied.

[　　]

I still remember the day ________ I left my homeland.

[　　]

You'll see a house ________ faces the south.

[　　]

A．of which the door

B．of the door which

C．the door whose

D．whose door

You'll see a house, the door ________ faces the south.

[　　]