I'm very confused! (Girls are happier in the country than ... in the city)

[Vaok]

１.Girls are happier in the country than ＿＿＿in the city.
A. that B. it C. / D. those
2. Girls in the country are happier than ＿＿＿in the city.

A. that B. it C. / D. those

3.The school is more beautiful now than____ in the past.

A. that B. it C. / D. one
4.The school here is more beautiful than____ in that village.

A. that B. it C. / D. one

5.The weather in Shanghai is hotter than ____ in Beijing.

A. that B. it C. / D. those

5.The weather here is colder in March than____ in December.

A. that B. it C. / D. those

My goodness,which should I choose? why?

[Lost_Soul]

I'd solve it thusly:

[Vaok]

Thank you. But I need a native to confirm it.

[Pamela]

Hi vaok,
Surely, you are entitled to wait for the native speakers of our forum, but I'd like to mention that I agree with Alex's suggested options and am going to add two more left unanswered :lol:

5. a)The weather in Shanghai is hotter than that in Beijing.
b)The weather here is colder in March than in December.

[Forastero]

Could you explain this to me?

in the first and second sentence there's olny a change at the word order. Why the second sentence needs the conjunction and not the first one?

Thanks

[Vaok]

Pamela,

thank you.that's what I want. I agree with you now.

[Pamela]

You're welcome, Vaok.