1.Let us stay with you.
2.We believe that our parents will come back sooner.
3.I would like you to drink a glass of milk.
4.I heard someone ringing at the door.
5.We watched the ducks swimming in the river.
6.I want my brother entered Moscow University.
7.I noticed that Nicholas was asleep in his chair.
8.I heard Dr. Smith plays the violin.
9.We believe that spring will come soon.