suitable preposition

i went to the park ( on ) foot
tommy is fond ( of ) reading
computers are usrful ( for )us
her coat is made ( of ) ltaly
that skirt is made ( by ) my sister
a monkey is climbing ( up ) the tree
a nurse looks ( after ) sick people
they travelled to europe ( by ) air
the bus is full. i cannot get ( on ) it
lots of birds are flying ( in ) the sky
mother cut the cake ( into ) several parts
a car knocked susie ( on ) yesterday
i do not know what you are talking ( about )
the firemen put ( out ) the fire with water

將in at on of by for into over to down about up after out填落 _____ 到

I went to the park ON foot.
Tommy is fond OF reading.
Computers are useful TO us.
Her coat is made IN ltaly.
That skirt is made BY my sister.
A monkey is climbing UP the tree.
A nurse looks AFTER sick people .
They travelled to Europe BY air.
The bus is full. I cannot get ON it
Lots of birds are flying IN the sky.
Mother cut the cake INTO several parts.
A car knocked susie DOWN yesterday.
I do not know what you are talking ABOUT.
The firemen put OUT the fire with water.

Comment:
Made in Italy 意大利制造, another example: made in China

Knock down 撞倒
Down can be a preposition or an adverb.
You can also say "A car knocked down Susie yesterday".

Get on a bus 搭上公共汽車, Get into a taxi

There are 14 prepositions. Each preposition is used once.

crystal：
1) I went to the park (on) foot.
2) Tommy is fond (of) reading.
3) Computers are useful (to) us.
4) Her coat is made (in) Italy.
5) That skirt is made (by) my sister.
6) A monkey is climbing (up) the tree.
7) A nurse looks (after) sick people.
8) They travelled to Europe (by) air.
9) The bus is full, I cannot get (in) it.
10) Lots of birds are flying (in) the sky.
11) Mother cut the cake (into) several parts.
12) A car knocked Susie (down) yesterday.
13) I don't know what you are talking (about).
14) The firemen put (out) the fire with water.

A car knocked Susie down yesterday.
But 'down' is an adverb here, not a preposition.