8.crowded/ cities/ often / than / more/ are/ the / countryside.

`=>` The cities are often more crowded than the countryside.

9.this /cake/ is /that/ more/ one/ delicious/ than?

`=>` Is this cake more delicious than that one ?

10.Who/ more/ than / Tom /can /in / intelligent / class/ his?

`=>` Who is more intelligent than Tom can in his class? 

`VI.`

1.Today the sun shines more brightly than yesterday.

`=>` Yesterday the sun shined less brightly than today.

2.This cake is more freshly made than that one.

`=>` That cake is less freshly made than this one.

3.Jim behaves more politely than his younger brother.

`=>` Jim's younger brother behaves less politely than him.

4.Teenagers act more violently these days than in the past.

`=>` Teenagers act less violently in the past than these days.

5. Thiếu đề

6.My sister speaks more quickly than me.

`=>` I speak less quickly than my sister.

7.Now Mary drives more carefully than she used to.

`=>` Mary used to drive less carefully than she does now.

8.This summer I go to the beach more often than the last summer.

`=>` The last summer I go to the beach less often than this summer.