Ted came for the weekend wearing only some shorts and a T-shirt, ___ is a stupid thing to do in such weather.
| A．this |
| B．that |
| C．what |
| D．which |
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 |
Many a student that mistake before.
| A．has made | B．have made | C．has been made | D．had made |
Neither he nor I for the plan.
| A．am | B．are | C．is | D．were |