Not until the teenager left his hometown ________ how much he loved it.
| A．did he know | B．he knew |
| C．had he known | D．he had known |
This maths problem isthat one．
| A．not so easy as | B．more easy than | C．as easier as | D．easy than |
. Who could have ____ that within 10 years he’d be in charge of the whole company
| A．indicated | B．promised | C．supported | D．predicted |
He made clear to his workmates that he would leave the company.
| A．it | B．that | C．them | D．this |
According to recent report, one of the rare animals, crocodile, will be in anger of dying out in 2020s
| A．a, / | B．/, the | C．the, / | D．the, the |
This young tree could not have been damaged ______accident; I believe it was done _____ purpose.
| A．by; on | B．for; with | C．by; with | D．for; on |