He doesn’t have the habit of planning his travel expense, so he won’t know what to do _______ the money runs out.
| A．once | B．before | C．unless | D．though |
相关试题
One of the most important questions they had to consider was _____ of public health. 
| A．what | B．this |
C．that | D．which |
Encourage your children to try new things, but try not to ___ them too hard.
| A．draw | B．strike | C．rush | D．push |
The computer was used in teaching. As a result, not only__________, but students became more interested in the lessons. 
| A．saved was teachers’ energy | B．was teachers’ energy saved |
C．teachers’ energy was saved | D．was saved teachers’ energy |
The children all turned ____ the famous actress as she entered the classroom. 
| A．looked at | B．to look at |
C．to looking at | D．look at |
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