Answer:
+) Immigration is difficult for the settlers.
2) The musician played the song at the concert.
3) May letters correspond through you? (This one doesn't make much sense, so I'm not really sure)
4) The policeman will arrest the criminal.
5) I would rather work alone than collaborate, OR I would rather collaborate than work alone.
6) Duct tape is impractical with fixing the car.
7) These plums are immature and not fully ripe.
8) Her sympathy was appreciated by the bereaved.
9) My plane will arrive at the airport on time.
10) We will announce our engagement at dinner.
11) I'll accompany you and walk beside you.
12) He broke the law by doing something illegal.
13) I collect and organize stamps in my album.
14) I'll support and encourage her efforts.
15) He waited impatiently and tapped his foot.
16) A scalene triangle is an irregular shape.
17) I covered my mouth to suppress a laugh.
18) A suffix may be added to the end of a word.
19) We met in the gym for the school assembly.
20) The idea was illogical and made no sense.
21) She'll immigrate from that country to this one.
22) You don't suffocate a plant so leave the vent? (Sorry, I don't know about this one)
23) I illuminate my room with a bright light.
24) I would like to accommodate your wishes.
Step-by-step explanation:
I don't really know how to explain this, except that you just kind of say the words in your head and rearrange them until they make sense...
As for number 3 and 22, I'm sorry, I can't figure it out.