－What are on show in the museum?
－Some pictures ____ by middle-school students.
A. taking B. having been taken 
. taken D. being taken
Though __________ with the present situation, the local government could not find effective measures to reduce the risk of coal mine accidents.
| A．unsatisfied |
| B．being unsatisfied |
| C．unsatisfying |
| D．to be unsatisfied |
--- You look so young. Haven’t you graduated from your university?
--- Yes, I _______ in the English Department of Zhejiang Normal University for four years.
| A．was studying | B．study |
| C．had studied | D．studied |
All the scientific evidence ______ that increasing use of chemicals in farming______ damaging our health.
| A．show; are | B．shows; are |
| C．show; is | D．shows; is |
It is required that the students _____ mobile phones in their school, so seldom _____ them using one.
| A．should not use; you will see |
| B．mustn’t use; will you see |
| C．not use; you will see |
| D．not use; will you see |
Nuclear ______ be really dangerous at times even though it’s a nice energy in general.
| A．shall | B．should | C．can | D．Must |