It’s said that this kind of plant only gives off this strange perfume on ________ conditions which the scientists are trying to figure out now.
| A．outstanding | B．certain | C．obvious | D．ordinary |
I really wonder__________ he has posted me many parcels_________ we didn't work together.
| A．how ,after | B．why, when |
| C．when, before | D．why, since |
— How come a simple meal like that costs so much?
— We had ______in your bill the cost of the cup you broke just now.
| A．added | B．included |
| C．contained | D．charged |
The black horse is___________ of the pair.
| A．the strongest | B．the stronger |
| C．the strong | D．quite strong |
He’ll accept the job _______the salary is very low. After all he needs money.
| A．unless | B．if not |
| C．though | D．so long as |
—Jack, would you like to go to the cinema with me this evening?
— ______
—I asked if you would like to go to the cinema with me this evening?
| A．Sorry? | B．Excuse me． |
| C．I’m afraid not． | D．Sorry, I can’t decide yet. |