ho _________English for 20 years inEnglish, now has been appointed headmaster of our school

下列各句中，加横线词语使用不恰当的一句是（ ）

The couple give ________ attend their 50th wedding anniversary some gifts to share their happiness.

His girlfriend wore a______ smile when seeing the nice dress she wanted.[ ]

Mr.Green,do you know ____________________—-July10.It will last a month.