题目内容：

完成句子：(共5小题，10个空，每空1分，满分10分)

1.When the war ______  ______ (爆发), he was working in the navy.

2.I can’t ______  ______(想出)why she said that.

3.______  ______he is free will he come to see me.

4.______  ______ a good teacher, John made great progress in his English study last term.

5.If I have a choice I would ______  ______ choose something else.