The young trees should ______well as often as possible.
| A．be water | B．watered | C．watering | D．be watered |
Nancy with her friends________now．
| A．play |
| B．plays |
| C．is playing |
| D．are playing |
Listen！Who________behind the tree？
| A．sings |
| B．sing |
| C．singing |
| D．is singing |
My brother left school in 2005，and since then he________in Beijing．
| A．lives |
| B．lived |
| C．will live |
| D．has lived |
We didn’t start our discussion________everybody arrived．
| A．since |
| B．if |
| C．while |
| D．until |
Dear students，please read every sentence carefully．________you are，________mistakes you’ll make．
| A．The more carefully；the fewer |
| B．The more careful；the less |
| C．The more carefully；the less |
| D．The more careful；the fewer |