My homework

[tough garnet]

help pls with this

[sick mango]

You may find it helpful to check

faq two-way prepositions

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Two-way prepositions

Two-way prepositions (or dual prepositions) are prepositions that govern the accusative or dative case. Ten prepositions have this property, namely:

an     auf      entlang    hinter    in
neben  über     unter      vor       zwischen

Generally, these prepositions are used with the accusative if they express a direction or change of position. They are used with the dative if they express location.

For example, the verb etw. an etw. hängen can be used to express both meanings depending on the intention:

Ich hänge das Bild an die Wand. (I am hanging the picture on the wall.)
Das Bild hängt an der Wand. (The picture is hanging on the wall.)

Expressing direction vs. location

It is important to note that the accusative should only be used if something has moved from one position to another. If movement has been indicated, but the location has not changed, then the dative should be used. For example,

Der Hund läuft in den Park. (The dog ran (from somewhere) into the park.)
Der Hund läuft im Park (herum). (The dog is running in the park.)

The dative is usually used with verbs of arriving, appearing and disappearing

Even though these verbs indicate direction, they are still used with dative rather than accusative.

Sie kamen am Bahnhof an.
Sie landeten auf dem Mond.
Das Pferd verschwand hinter dem Berg.

[sick mango]

Another useful faq to have a look at for this exercise is

faq contractions

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Contractions

A contraction (Verschmelzung or Schmelzwort) is a shortened form of a word or group of words created by omitting letters and sounds. Common examples of contractions in English are:

I'm = I am
won't = will not
let's = let us
-'re = are (e.g. we're walking home)

Contractions are often used in German, especially with prepositions and definite articles that take the accusative or dative (never the genitive). For example, zu dem is often shortened to zum, as seen here:

Pferd geht zum Zahnarzt.

Some contractions with prepositions are so common (see below) that they are effectively manadatory in normal speech. Writing the full form has the effect of emphasising the definite article, indicating that you are referring to a specific object. For example:

Pferd geht zu dem Zahnarzt, der ihm gestern empfohlen wurde.

Common contractions in German

These contractions are used very often and are acceptable in formal German.

ans = an das
am = an dem
beim = bei dem
im = in dem
ins = in das
vom = von dem
zum = zu dem
zur = zu der

Additionally, the pronoun es is often contracted when it comes directly after the verb in certain set phrases. For example, the greeting Wie geht es dir? is often contracted to Wie geht's dir?

Contractions in informal German

Contracting the article das to -s in prepositions is very commonly used in informal, spoken German, and sometimes appears in formal German in set phrases.

aufs = auf das
durchs = durch das
fürs = für das
übers = über das
ums = um das
unters = unter das

Contracting the article dem to -m is relatively common in spoken German with almost all prepositions. For example:

hinterm = hinter dem
überm = über dem
unterm = unter dem

Contracting the other articles can also occur, but this is relatively rare.