--- __________ are all these together?
--- 425 yuan.
A. How much B. How many C. How long D. How often
Spring is coming and there ________ flowers ever
ywhere.
A. is B. are C. was D. were
--- Can you come and play with us this evening?
--- I’d love to, ___________I have a lot of homework to do.
A. and B. so C. or D. but
The meeting will begin ________ 4:30 this afternoon. Don’t forget it.
A. onB. inC. at D. for
My grandpa often told _____ interesting stories.
A. I B. me C. my D. mine
根据中文和英文提示，写一封意思连贯、符合逻辑、不少于50词的回信。信的开头和结尾一给出，其词数不计入所要完成的回信内。所给英文提示词语仅供选用。请不要写出你的校名和姓名。
假如你叫李华，最近美国笔友Jim发来邮件说他非常喜欢做实验，并买了一些实验器材在家里做实验，然而他的妈妈不同意他这样做，他很苦恼。请根据他的问题回复邮件。
提示词语：understand, do experiments, dangerous, safety, get hurt
