It took us about two hours the top of the mountain.
我们花费了大约两个小时的时间到达山顶。
To finish the work on time, we'll have to work____ hours a day.
—When did the old man die? —He ________a rainy winter evening.
—Could you tell me ? —Certainly.
Tom said he had never been there, but he was .
— Don’t _______ too late, or you will feel tired in class. — I won’t, Dad.