1. Teaching ... a craft, it ... a real art. C. isn’t, is

A. is, isn’t

B. aren’t, are

C. isn’t, is

D. aren’t, is

2. They … each other for twenty years. A. have known

A. have known

B. have been knowing

С. know

D. are knowing

3. They… still ... on the project. A. are, working

A. are, working

B. have worked

C. don’t work

D. have been working

4. Who has made more than 10 mistakes? B. – We have.

A. – I am.

B. – We have.

C. – We do.

D. – Yes, we have.

5. Curriculum is not standardized throughout the nation, … ? B. is it?

A. does it?

B. is it?

C. doesn’t it?

D. isn’t it?