When first to the market, these products enjoy great success.
| A．introducing | B．introduced | C．introduce | D．being introduced |
_____ of danger in the street at night, she had to go home, with a friend ____ her.
| A．Warning, following | B．Having warned, following |
| C．Having been warned, following | D．Warned, followed |
—Alice, you feed the bird today；______ ？ —But I fed it yesterday.
| A．do you | B．will you | C．didn’t you | D．don’t you |
The women carrying babies , come in first ,_________ ?
| A．will you | B．will they | C．do you | D．don’t you |
In no country other than Britain, it has been said, ____ experience four seasons in the course of a single day.
| A．people can | B．you can | C．can it | D．can one |
They have no idea at all ____.
| A．what he is working on | B．what is he working on |
| C．what did he work on | D．what he is working |