______the problem clearly, Mary has to look for lots of information.
| A．To explain | B．Explaining |
| C．Explain | D．Explained |
—Dongdong, ____ toy car is that?
—It’s ____.
| A．who’s; hers | B．whose; mine |
| C．whose; her | D．who’s; my |
—____, Tom. Is this your book?
—No, it isn’t. I think it’s ____.
| A．Excuse me; Jack | B．Sorry; Jack’s |
| C．Excuse me; Jack’s | D．Sorry; Jack |
—Is that girl Kate Green?
—Yes, ____.
| A．you’re right | B．that’s OK |
| C．he is | D．she isn’t |
—______ Jim have an egg?
—Yes. He _____
| A．Do; do | B．Does; do |
| C．Does; does | D．Does; doesn’t |
Kate has small____ and short ____ .
| A．ear; hair | B．ears; hair |
| C．ears; hairs | D．ear; hairs |