— Who should be responsible for the accident?
— The boss, not the workers. They just carried out the order______.
| A．as they told | B．as are told |
| C．as told | D．as telling |
A number of students _____from the south.
| A．are | B．is | C．have | D．has |
No one except my parents _____anything about it.
| A．know | B．knows | C．is knowing | D．have known |
This pair of shoes ____made in Nanjing.
| A．is | B．are | C．have been | D．had been |
Between the two rows of trees _____the teaching building.
| A．stand | B．stands | C．standing | D．are |
They each ____ a beautiful handkerchief.
| A．have | B．has | C．there is | D．there are |