-Sorry, I made a mistake again.
-Practice more and you'll succeed.
| A． | Never mind | B． | Certainly not |
| C． | Not at all | D． | Don't mention it |
—Alice, feed the bird today, _____?
—But I fed it yesterday.
| A．do you | B．will you | C．didn’t you | D．don’t you |
The mother didn’t go out to search for her lost son. I wonder ______________________him.
| A．was she concerned about | B．if she was concerned about |
| C．if she does concerned about | D．why she was concerned about |
Look! The dictionary , _____is red , is a birthday gift given by Father.
| A．which cover | B．the cover of which | C．the whose cover | D．that the cover |
_________ we can’t understand is ___________ he didn’t join us in our discussion.
| A．That; why | B．What; why | C．That; that | D．What; whether |
He couldn’t ______ the fact that the money was found in his house.
| A．answer for | B．leave for | C．account for | D．care for |