помогите с заданием пожалуйста

1. Когда она оказалась в поезде, она вспомнила о ключе.
2. Такси ждет на улице.
3. Я сегодня не завтракал.
4. Он читает лекцию по биологии.
5. Он уже ушел, когда Лена включила радио.

1."Who usually (to do) his homework in this room?" :This student (to do)."
2."Who (to do) his homework there now?" "I (not to know)."
3.I (to live) near my office last year. I always (to walk) there.
4."How well your friend (to speak)English?" "He (to speak) English badly."
5."What language you (to learn) five years ago?" "I (to learn ) French."
6."What language he (to learn) now?" "He (to learn) German."
7."How long your class usually (to last)?" "It usually (to last) two hours."
8."How long your class (to last) on Wednesday morning?" "It only (to last) an hour."
9."Who you (to discuss) this question with last night?" "I (to discuss ) it with my friends."
10."Who you usually (to go) home with?" "I (to go)home with my friends."
11.How well he usually (to know)his lessons?
12.I (not to work)at this office three years ago."
13.You (to work) there now?
14."How long you (to stay) in Kiev last year?" "I (to stay) there a month .""How long you (to be going)to stay there this year?" "I (to be going) to stay there a month, too."

в скобках укажите функцию герундия.

1. There are some ways of obtaining high quality alloys. 2. Melting is very important in the
production of high-quality castings(