Unless ____ regularly, the plants will not ____ in early spring.
| A．water; flower | B．watering; be flowering | C．watered; flower | D．watered; be flowered |
____ he was not rich enough to buy whatever he wanted, Edison decided to make his new laboratory the best.
| A．Although | B．Since | C．When | D．As |
We still cannot persuade him to give up smoking ____ hard we tried.
| A．so | B．how | C．though | D．however |
____ we went those days when we were in the countryside, we were warmly welcomed.
| A．There | B．Where | C．Wherever | D．Whatever |
A ____ road goes ____ from our village to the center of the town.
| A．straight;straightly | B．straightly;straightly |
| C．straightly;straight | D．straight;straight |
When his mother came in, Charlie pretended _________.
| A．sleep | B．sleeping | C．to sleeping | D．to be sleeping |