You ______ wear sports shoes when you climb a mountain.
| A．can’t | B．shouldn’t | C．mustn’t | D．have to |
根据汉语意思翻译句子。
我感到很惊讶，我和大卫都未受邀参加这个晚会。
I felt surprised that________David________I was invited to take part in the evening party．
He’s not a perfect child．He sometimes talks back________his parents talk with him．
| A．if |
| B．before |
| C．when |
| D．until |
Keep on．Don’t stop．The you climb，the________you will see．
| A．highest；farthest |
| B．highly；farther |
| C．high；far |
| D．higher；farther |
At present，lots of people would rather________in the country because there is________pollution in the city．
| A．live；more |
| B．to live；less |
| C．live；less |
| D．to live；more |
I won’t go to the concert this evening．I________watch the NBA on TV．It’s more exciting．
| A．had better |
| B．would rather |
| C．ought to |
| D．have to |