His wife was busy cooking while he watched TV ________ comfortably in the sofa.
| A．seat | B．to seat | C．seating | D．seated |
Does the way you thought of ________ the water clean make any sense?
| A．making | B．to make | C．how to make | D．having made |
As a result of destroying the forests, a large ________ of desert ________ covered the land.
| A．number; has | B．quantity; has | C．number; have | D．quantity; have |
He worked late last night, ______, early this morning.
| A．that is | B．even worse | C．or rather | D．namely |
________ I met her, she was working only in a small factory.
| A．The first time | B．For the first time | C．At the first time | D．At first |
He is seldom, ______, absent from school.
| A．if some | B．if any | C．if not | D．if ever |