It’s required that mineral resources_______ hand in hand with the local environment protection.
| A．be exploited | B．exploit | C．have exploited | D．exploited |
Henry broke the window. I’ll ask him why __________ .
| A．did he do that | B．he did that |
| C．had he done that | D．he had done that |
I think it is necessary for my 19-year-old son to have his own mobile phone, for I sometimes want to make sure if he _____ home for dinner.
| A．come | B．comes | C．has come | D．will come |
Will you please keep ________, Tom? Your father is sleeping in the room.
| A．calm | B．silent | C．quiet | D．still |
Five passengers were _____ in the traffic accident and they have all been taken to the nearest hospital.
| A．injured | B．damaged | C．destroyed | D．ruined |
—What do you think of my article, professor?
—The former part is well written but _____ is just so so.
| A．the later | B．the last part | C．latest | D．the latter |