Motorists _____ of speeding may be banned from driving for a year.
| A．convicted | B．arrested | C．charged | D．judged |
He tried his best to solve the problem，________difficult it was.
| A．however | B．no matter |
| C．whatever | D．although |
Measures have been taken to prevent the river from____．
| A．having polluted | B．being polluting |
| C．being polluted | D．to pollute |
Children often display an________curiosity about every new thing they encounter.
| A．impossible | B．unreliable |
| C．extra | D．incredible |
___________in reality，the story is popular with adults.
| A．Root | B．Rooting |
| C．Rooted | D．To root |
It’s helpful to put children in a situation___________they can see themselves differently.
| A．that | B．when |
| C．which | D．where |