---I’d like to invite you to dinner this Sunday, Mr. Smith.
---_____.
| A．Oh, no. Let’s not | B．I’m very sorry, but I have other plans |
| C．I’d rather stay at home | D．Oh, no. That’ll be too much trouble |
There were three ____ eggs in the basket.
| A．dozen | B．dozens | C．dozened of | D．dozens of |
The earth is 49 times ___the moon.
| A．as bigger as | B．so big as | C．the size of | D．of the size of |
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 |