29. Can you say _____ certain when he will come here?
| A．at | B．for | C．with | D．In |
It's said that the power plant is now large as what it was.
| A．twice as | B．as twice | C．twice much | D．much twice |
–- Helen, are you going to the airport to see Jack off the day after tomorrow?
-- _____________, I would go.
| A．Were he to leave tomorrow |
| B．If he was about to leave tomorrow |
| C．Was he to leave tomorrow |
| D．If he would leave tomorrow |
If parents have children help with housework, the children will feel needed.,they will learn to take care of themselves.
| A．On the contrary | B．In a word |
| C．That is to say | D．What’s more |
David is animal fur, so he won’t visit anyone who has cats or dogs in the house.
| A．curious about | B．allergic to | C．satisfied with | D．food of |
She witnessed an accident ______ a minibus had a head-on crash with a taxi.
| A．what | B．which | C．where | D．that |