1Tom drives his car carefully than peter Peter...... 2This international conference is extremely inportant. Makr a note in your diary --->This international conference is extremely inportant. .......in your diary (put)

1. Peter drives his car more carefully than Tom.

Or: Peter drives his car less carelessly than Tom.

Or: Peter doesn't drive his car as carelessly as Tom.

2. This international conference is extremely important. Put it down in your diary.

make a note of sth = put sth down: ghi chú lại, viết lại cái gì (để mà nhớ)