Composition

Hi,

My physics teacher

 The best teacher I have ever had was a friendly and middle-aged woman whose name was Blanca. She wanted to work for NASA in the US as an aerospace engineer. She liked everything connected to space, stars and so on, but she couldn’t get a job with NASA so she had to work at my high school.

Although she taught physics using a usual boring book, the lessons weren’t as boring as they used to be beforel she became my teacher, because she told a lot of jokes about what we were studying.

I got high marks in physics because she explained really well and it was not necessary to study.

Unfortunately, nowadays I have another physics teacher. I wish Blanca was back.

You can't just join two sentences by using a comma instead of a period at the end of the first one. You have to use a joining word, or else make it two sentences.

Best wishes, Clive

Hi,

'Was' is commonly used and accepted. It often suggests there is at least some possibility that the wish may come true. 'Were' is fine, but tends to make the style seem rather more formal, and stresses the fact that the wish is not going to come true.

Best wishes again, Clive