—Excuse me, may I speak to Linda?— _____ A. Who are you? B. Is that Linda? C. This is Linda speaking.
____ books are in the box.
—_____ is your ruler? —It’s in my schoolbag ____ the sofa.
This is a ____ . Those are some ______, too.
—Your watch is very nice. —_____.
— Is that _____ English book? —Yes, it is.. It’s ____.