.Mr.Smith ___________ is smoking is looking for what he lost yesterday.
A. whom B. who C. which
_______ my book , _______ your book.
| A． This’s; it’s | B．this is; these’re |
| C． That’s ; this’s | D．This is; that’s |
--______she?---She’s my sister.
| A．Who’s | B．Who | C．What | D．What’s |
--What’s that in English?
--________.
| A．Yes, it’s a watch | B．It’s my watch |
| C．It’s a watch | D．No, it’s a watch |
--Excuse me , is this your jacket?
--Yes, ______.
| A．is it | B．it’s | C．it is | D．it isn’t |
I have （有）_____ ruler and ____ eraser.
| A．a, a | B．an ,an | C．a, an | D．an ,a |