Question

A) He wants lunch every day um the cafeteria alone.

B) Do you like to eat alone.

C) The two boys will study alone um a separate group.

D) Mary and I will also study alone on a special group.

E) The old woman lives alone in a furnished room.

F) The dog foind its way home alone.

G) He works alone in a small office.

H) He often goes for a walk in the park alone.

I) Do you like to go to the movies alone.

J) She did all the work alone.

K) He plans to go to Europe next summer.

L) The boys study alone in the group.

No lugar da palavra alone substitua pela preposição by e um pronome reflexivo.

Answer 1

a) By himself

b) by yourself

c) by themselves

d) by ourselves

e) by herself

f) by itself

g) by himself

h) by himself

i) by yourself

j) by herself

k) by himself

l) by themselves

sempre que a frase tiver um pronome oblíquo(I,YOU ,HE...) basta você colocar a preposição "by" junto com o reflexivo correspondente no lugar de alone

EX: YOU  -   YOURSELF

espero ter ajudado