This math question is too difficult. Can you help me ?
| A．work on it | B．work out it | C．work it out | D．work for it |
–What’s his phone number?
-_______ 257-6890.
A. Its B. His C. It’s
Is she your aunt（姑姑）? What’s ______ name?
A. his B. her C. she
---What color is it?
—It’s _______ orange. It’s orange ruler
A. an an B. an不填 C. 不填，an
–What’s this in English?
--__________.
A. It’s red B. It’s a pen C. It’s a green
That is ______ key.
A. he B. I C. my