(重庆卷30). The news shocked the public, to great concern about students’ safety at school.
| A．having led | B．led | C．leading | D．to lead |
Don’t leave the water_______ while you brush your teeth.
| A．run | B．running | C．being run | D．to run |
The salesman scolded the girl caught ______ and let her off.
| A．to have stolen | B．to be stealing | C．to steal | D．stealing |
11. Though I have often heard this song ______, I have never heard you ______ it.
| A．being sung; sang | B．sang; singing | C．sung; sing | D．to be sung; to sing |
____________, they have been struggling against the snowstorm for ten hours.
| A．Up to now | B．By the time | C．From then on | D．In the future |
Our teacher looked here and there on our playground ________ looking for something.
| A．even though | B．even if | C．as if | D．only if |