. The magician picked several persons from the audience and asked them to help him with the performance.
| A．by accident | B．on occasion |
| C．at random | D．on an average |
— Do you know something about Kwanzaa?
— It is _____festival celebrating the culture and history of African Americans.
| A．a seven-day | B．a seven-days | C．a seven day | D．seven days |
— How do you find your English teacher?
— She is always full of _____ as though she never knew tiredness.
| A．strength | B．force | C．energy | D．spirit |
— Would you mind if I take the seat next to yours?
— ___________.
| A．Yes, sit down please | B．No, go ahead |
| C．Surely, never mind | D．No, you can’t take it |
_____ you don’t like him is none of my business.
| A．That | B．What | C．Who | D．Whether |
Who do you think _____ for the failure of their marriage?
| A．to blame | B．to be blame | C．is to blame | D．is to be blamed |