About ____ gene-targeting drugs are already in testing pipeline. It won’t be long ____ they are put into effect.
| A．two dozen; before | B．two dozens; that | C．two dozens of; before | D．dozens; that |
The manager________one of the hotel servants of stealing the money.
| A．scolded |
| B．complained |
| C．accused |
| D．charged |
The cause he had devoted himself to________a perfect success.
| A．proving |
| B．proved |
| C．was proved |
| D．has been proved |
The work they got down to________again yesterday because of the bad weather.
| A．stopped |
| B．stop |
| C．stopping |
| D．be stopped |
I can't meet their requirements that I________there at once.
| A．went |
| B．have gone |
| C．go |
| D．going |
He was________with gambling a year ago and lost his family.
| A．obsessed |
| B．blessed |
| C．pleased |
| D．popular |