1/ Milk is used for making butter and cheese.
2/ Human life has been completely changed by science and technology.
3/ Mr Cole used to be visited by John at weekends.
4/ The river bank is covered by weeds.
5/ The room was filled by smoke.
6/ These exercises were done well.
7/ This dress must be washed in cold water.
8/ No mistakes have been made in his composition.
9/ His painting will be exhibited bu New Arts gallery for the first time.
10/ This house was built 100 years ago.
11/ The artificial flowers are made of silk.
12/ The lessons are being written by the students now.
13/ This job has to be done at once.
14/ These animals at the zoo are fed twice a day.
15/ The operation is going to be performed by French doctors.
16/ All the arrangements have been made.
17/ They couldn't be found anywhere.
18/ The jewelry has been stolen while she was out.
19/ A lot of money is spent on advertising by my father everyday.
20/ The books are delivered by Peter everyday.