_____ mobile phone is very convenient, school children are not allowed to own one.
| A．If | B．While | C．Because | D．When |
相关试题
No government so far has been 
able to the number of jobs available with the number of people out of work.
| A．provide | B．weigh | C．multiply | D．balance |
Every possible means ________, but the teacher as well as the students ________ found a solution to the problem yet.
| A．has been tried; hasn’t | B．has tried; haven’t |
| C．have tried; haven’t | D．have been tried; hasn’t |
________ the project of helping the laid-off workers, some companies provide more jobs during November.
| A．In memory of | B．In favor of | C．In celebration of | D．In support of |
At the party the host presented an award to ______ took part in saving the drowning child.
| A．whomever | B．whom | C．who | D．whoever |
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