Grammar - Negate The Sentence

Negate the following sentence:

我是美国人

Negate the following sentence:

她是加拿大人

Negate the following sentence:

高老师是中国人

Negate the following sentence:

他叫Chris

Change the following sentence to a (...) 不 (...) question:

你是美国人

Change the following sentence to a (...) 不 (...) question:

她是英国人

Change the following sentence to a (...) 不 (...) question:

他叫Mike

Change the following sentence to a question using 吗：

他是美国人

Change the following sentence to a (...) 不 (...) question:

你是中国人

Change the following sentence to a (...) 不 (...) question:

高老师是加拿大人