题目内容：

根据汉语意思完成句子，每空一词。

1.他上午十一点才醒。

He didn't ____________ ____________ until 11 o'clock in the morning.

2.不要为你母亲的健康担心。

Don’t _____________ _____________ your mother’s health.

3.上周我偶然碰见一位老朋友高原。

Last week I _________ ___________ an old friend named Gao Yuan.

4. 在中国，人们经常轮流为饭菜买单.

In China, people often _________ __________ paying for the meal.

5. 你经常收到Tom的来信吗？

Do you often __________ _________ Tom?