题目内容：

根据汉语意思完成下列句子,每空一词

1.到目前为止,我们学会了一千多个英语单词。

________ ________,we have learnt over 1,000 English words.

2.约翰和汤姆已经加入了比赛。

John and Tom have________ ________ ________.

3.另外,我们应该帮妈妈做家务。

________ ________,we should help mother with housework.

4.孩子们为参加足球俱乐部而开心。

Children were ________ ________ joining the football club.

5.许多人因为缺乏睡眠而得病。

Many people become ill because of the________ ________ sleep.