This is a very convenient place to live in, is an airport connecting all the big cities.
| A．20 km northwest of it | B．20 km northwest of which |
| C．northwest 20 km to it | D．northwest 20 km of which |
His wife, to whom he_______ for 20 years , was childless.
| A．had married | B．married |
| C．has married | D．had been married |
—Hi , Tracy , you look tired.
—I'm tried. I ______ the living room all day.
| A．painted | B．had painted |
| C．have been painting | D．have painted |
One side of the board should be painted yellow, and_______
| A．the other is white | B．another white |
| C．the other white | D．another is white |
Nick is looking for another job because he feels that nothing he does_______ his boss.
| A．serves | B．satisfies |
| C．promises | D．support |
They desired that they_______ the right to vote.
| A．had | B．have | C．are | D．were |