We all know the truth _____ there are air, water and sunlight there are living things.
| A．where | B．wherever | C．that | D．that wherever |
Her good health is chiefly due to proper diet and _____ exercise.
| A．common | B．ordinary | C．regular | D．normal |
I really appreciate____ to help me with my maths, but I’m afraid that I have no time this week.
| A．you to offer | B．it you offer |
| C．your offering | D．this you are offering |
It was April 29, 2011_____ Prime William and Kate Middleton walked into the palace hall of the wedding ceremony.
| A．that | B．when | C．since | D．before |
The Nile River ____ flood large areas but now the water ____ produce electricity.
| A．used to; is used to | B．used to; used to |
| C．was used to; is used to | D．was used to; used to |
So difficult ____that no one could ___ a good solution to it.
| A．was the problem; come up with |
| B．the problem was; come up with |
| C．the problem was; put up with |
| D．was the problem; put up with |