We don’t doubt _______ we will complete all the projects before the year 2010.
| A．when | B．if | C．that | D．whether |
（浙江卷8）. The experiment shows that proper amounts of exercise, if __ regularly, can improve our health.
| A．being carried out | B．carrying out | C．carried out | D．to carry out |
(重庆卷34). Many buildings in the city need repairing, but the onefirst is the library.
| A．repaired | B．being repaired | C．repairing | D．to be repaired |
(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 |
（天津卷12）. I rained heavily in the south, _______ serious flooding in several provinces.
| A．caused | B．having caused | C．causing | D．to cause |
. The lawyer listened with full attention，to miss any point.
| A．not trying | B．trying not | C．to try not | D．not to try |