Bị động
1.They haven't done anything since he left
2.A doctor has just examined John
3.They haven't used this machine for ages
4.Peter has sung this song
5.They have paid doctors a lot of money
6.She has eaten all the eggs
7.famous engineers have designed the aircraft
8.Have several people just seen the accident ?
9.We have invited all the members to the party
10.They use cars and trucks to carry food to markets
11.We will meet him at the station
12.How long have they done their work ?
13.No one could help him
14.The teacher helps Lan
15.The news surprises me
16.Lan will post the letter
17.Linda wrote that letter
18.That company employ many people