It is difficult for children to change their eating habit later in life. _____，parents should encourage healthy eating from an early age.
A．Otherwise B．Therefore C．Besides D．However
You have no chance of getting the position. I’m afraid you _____ your time if you apply for it.
A．waste B．have wasted C．have been wasting D．will be wasting
With economy developing at great speed, our city has _____ quite a few changes in recent years.
A．witnessed B．accumulated C．arisen D．introduced
Currently，many American women are still faced with the _____ of choosing between work and family commitments.
A．desperation B．confusion C．dilemma D．concern
— Thanks for the lift. I do appreciate it.
— _____.
A．No problem B．With pleasure C．Not necessary D．A piece of cake
假如你是学生会主席张凡，学校安排你给即将到你校任教的外籍教师Martin推荐一名学生助手。请根据以下要点给他写封推荐信。
要点如下：
1.欢迎Martin的到来；
2.推荐李华为学生助手（高二年级学生， 17岁）
3.介绍李华当助手的优势（电脑，沟通能力，热心助人，英语水平）
注意事项：
1. 词数不少于100.
2.开头和结尾已给出， 不计入总词数。
3.可以适当增加细节，以使行文连贯。
参考词汇：助手 assistant
Dear Martin,
_______________________________________________________________
Yours sincerely,
Zhang Fan
