1 has written
2 have you do
3 have eaten, have not eat, has eaten, have eaten
4 have given
5 have lost
1. to represent a new step towards achieving high quality of service and solving the problem of lack of staff at post-offices. (герундий и инфинитив)
2. including transmission and reception of signals, the necessary components of radio (причастие)
3. by varying the resistance of carbon granules held between a cup and diaphragm.(герундий)
4. to perform oral communication (инфинитив)
Вставь <span>в промежутки: прошлое ,на идет,чашки,вверх,имеет,часы,уходит. Послушай и <span>проверь
</span></span>
Looked,saw,was snowing, was.
2. is talking,is talking,is watching.
3. didn't go,was,stood
4. were working,was working
5. are sitting,are waiting,is
6. asked,didn't ask,was
8. was opening,understood,did
9. returns, has,rests,didn't rest,was working