Mary clapped her hand over her mouth _____ she realized her words hurt little Tom.
| A．ever since | B． as if |
| C．so that | D．as soon as |
26．Before selecting the curtain for your newly-decorated house，it’s important to know what colors look great _________the wall paper．
| A．on | B．with | C．in | D．Against |
25．If water becomes increasingly scarce in decades__________，water shortage will become a hot issue all over the world．
| A．coming | B．having come | C．to come | D．to be coming |
24．I admire my English teacher．I can remember very few occasionsshe stopped working because of ill health．
| A．that | B．when | C．where | D．Which |
23．Following the successful Beijing Olympic shanghai________70 million people for the 2010 World Expo.
| A．expects | B．is expected | C．is expecting | D．has expected |
22．After running for a mile yesterday，I was almost，not feeling bad，though．
| A．out of shape | B．out of breath |
| C．out of control | D．out of order |