When you boil the milk you must _______ it carefully.
| A．look at | B．notice |
| C．see | D．watch |
The United Nations in 1945.
| A．were found | B．were founded | C．was founded | D．was found |
I, who your good friend, will share your joys and sorrow.
| A．am | B．is | C．are | D．was |
Between the two buildings a monument.
| A．stand | B．stands | C．standing | D．is standing |
Laying eggs the ant queen's full-time job.
| A．is | B．are | C．has | D．have |
Peter, perhaps John, playing with the little dog.
| A．is | B．are | C．were | D．seems |