At first the institute refused to purchase the telescope, but this decision was _____ revised.
| A．occasionally | B．consequently |
| C．successively | D．subsequently. |
The medicine has begun to ___
| A．have its work | B．take its work | C．do its work | D．show its work |
Had your father seen the doctor earlier, he ____.
| A．would have died | B．would not have died | C．would not die | D．has not died |
He ___ on the grass, looking at the clouds in the sky.
| A．is laying | B．is lying | C．has laid | D．has lied |
His brother __ a lot of silkworms last summer.
| A．rose | B．fed | C．raised | D．grew |
On the wall __ two large portraits.
| A．hangs | B．hang | C．hanged | D．hanging |