—Why，Jack，you look so tired!
—Well，I ________ the house and I must finish the work tomorrow.
| A．was painting | B．will be painting |
| C．have painted | D．have been painting |
He's unlucky , and he's always suffering _____ luck one after another .
| A．a sick | B．an ill | C．sick | D．ill |
Our decision _____ was wise .
| A．of waiting | B．to wait | C．for waiting | D．to be waiting |
I couldn't have got to the meeting on time - _______ an earlier train .
| A．if I had not caught | B．unless I had caught | C．if I did not catch | D．unless I caught |
I'd better not catch ______ that again !
| A．your doing | B．you doing | C．you to do | D．you being doing |
I posted the letter some time _____ the week .
| A．in | B．during | C．throughout | D．within |