She couldn’t stop ________ when he told her the funny joke.
| A．to laugh | B．laughing |
| C．laughed | D．to laughing |
Heilongjiang is in the _______ of China.
| A．northeast | B．northeastern | C．northwest | D．northwestern |
Your digital watch is quite nice. Where did you buy_____？I want to buy_____，too.
| A．one；one | B．it；it | C．it；one | D．one；it |
At the foot of the hill you could hear nothing but the_______ of the running water.
| A．shout | B．noise | C．voice | D．sound |
— Aren’t Sam and Helen in Class Three? — _______.
| A．No, they are | B．Yes, they aren’t |
| C．No, they aren’t | D．Yes, they was |
Sam with his friend Helen _______ in Class Three. They are in Class One.
| A．isn’t | B．aren’t | C．wasn’t | D．weren’t |