---How did it _________ that all the flowers died ?
---I had forgotten to water them.
| A．come on | B．come up | C．come about | D．come along |
The students scored 100 ______ in the intelligence test, while John got 160.
| A．on average | B．in total | C．in the middle | D．on the whole |
— The earthquake last night was really terrible.
— ______, no people were injured or killed, and they escaped in time.
| A．Luckily | B．Hopefully | C．Sadly | D．Unfortunately |
The policeman’s attention was suddenly caught by a small box which _____ placed under the Minister’s car.
| A．has been | B．had been | C．was being | D．would be |
The fire was finally ______ after the building had ______ for two hours.
| A．put off; caught fire | B．put away; been on fire |
| C．put out; been on fire | D．put out; caught fire |
I have offered to paint the house ______ a week’s accommodation (居住).
| A．in exchange for | B．with regard to | C．by means of | D．in place of |