Question

E)I _____ open the door because I haven't got the key.
() Can't
( ) Couldn't
F)____ I use your phone, Mr Smith?
( ) Can
( ) Could
G) If we had left sooner, we ____ have taken the train
( ) Could
( ) Can​

Answer 1

E) I can't open the door because I haven't got the key.

(X) Can't

(  ) Couldn't

F) Can I use your phone, Mr Smith?

(X) Can

(  ) Could

G) If we had left sooner, we could have taken the train.

(X) Could

(  ) Can

Explicação/Tradução.

E)  Eu não consigo abrir a porta porque não tenho a chave.

F) Posso usar seu telefone, senhor Smith?

G) Se tivéssemos saído antes, poderíamos ter pegado o trem.

Can (Posso, consigo...): Simple present/Presente simples

Can't (Não posso, não consigo...): Simple present/Presente simples

Could (Poderia, conseguiria...): Past tense/Pretérito

Couldn't (Não poderia, não conseguiria...): Past tense/Pretérito