Fill in the particle or preposition up, with, to, of, off, down, into, back, for
1) up
2) back
3) into
4) back
5) with
6) off
7) into
8) for
9) of
10) for
11) of
12) off
13) into
14) with
15) on
16) with
17) of
18) to
19) for
20) into