Choose the correct answer, a or b.
1. A cell phone _____ small.
a.) is
b.) are
2. Lemons ______ cheap.
a.) is
b.) are
3. The moon ______ square.
a.) isn't
b.) aren't
4. He isn't short. He ______ tall.
a.) is
b.) are
5. Flowers aren't ugly. They _______ beautiful.
a.) is
b.) are
6. The office isn't quiet. It ______ noisy.
a.) is
b.) are
7. The earrings ________ cheap. They are expensive.
a.) isn't
b.) aren't