Experts warn that medical waste from hospitals, if properly, may contribute to spreading diseases.
| A．not handled |
| B．not being handled |
| C．not to be handled |
| D．not having been handled |
--- _____you interrupt now? Can't you see I'm on the phone?
--- Sorry Sir, but it's urgent.
| A．Must | B．Should |
| C．Can | D．Would |
The reason____ Spielberg could not go to the Film Academy was his grades were too low.
| A．that; that | B．why; that |
| C．why; because | D．that; because |
Evidence has been found through years of study_____children's early sleeping problem is likely to continue when they grow up.
| A．why | B．how | C．whether | D．that |
Before you quit your job, ______how your family would feel about your decision.
| A．consider | B．considering |
| C．to consider | D．considered |
It is only when an NBA player has aged and been through many battles _____he learns an important lesson;
there is no "I" in "team".
| A．after | B．before | C．that | D．what |