Помогите!! Open the brackets and put the verbs into the correct tense: 40. Once while I...

Question

Помогите!!
Open the brackets and put the verbs into the correct tense:

40. Once while I (walk) in a park of London, I (see) an old-looking man.
41. I (be) never to London.
42. He looked around and (see) a pack of wolves (come) up to them.
43. He (work) for Software Company in Spain in 1990.
44. I (call) you tomorrow.
45. She passed the test because she (study) hard for it.

Answer 1

40. Once while I was walking in a park of London, I saw an old-looking man.
41. I have never been to London.
42. He looked around and saw a pack of wolves coming up to them.
43. He worked for Software Company in Spain in 1990.
44. I'll call you tomorrow.
45. She passed the test because she had studied (had been studying) hard for it.

Answer 2

40. was walking; saw
41. have never been
42. saw; coming
43. worked
44. will (можно shall поставить тоже)
45. had studied