| A．wasn't | B．weren't | C．isn't |
| A．cat | B．old | C．how |
| A．us | B．my | C．she |
| A．was | B．are | C．is |
| A．It's very beautiful. | B．It was very beautiful then. | C．It isn't very beautiful. |
| A．It is naughty now. | B．It wasn't naughty then. | C．It was naughty then. |
| A．You were very cute then. | B．You weren't cute then. | C．I was very cute then. |
| A．London | B．very | C．tomorrow |
| A．Are you Shanshan? | B．Is this Shanshan? | C．Is she Shanshan? |
| A．am | B．were | C．are |
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