, the disease will produce a powder poison that will kill the patient.
| A．If it untreated | B．If is untreated |
| C．If being untreated | D．If untreated |
_______ how to do the homework, I went to ask my teacher for help.
| A．Not to know | B．Not knowing | C．Knowing not | D．Not known |
I’ve never heard the word _______ in spoken English.
| A．use | B．used | C．using | D．useing |
.The result of the test was rather _______.
| A．disappointed | B．disappointing | C．being disappointed | D．disappoint |
.There was so much noise in the room that the speaker couldn't make himself
| A．being heard | B．hearing | C．heard | D．hear |
.With the money _______ , he couldn’t buy any ticket.
| A．to lose | B．losing | C．lost | D．has lost |