Bending down, he the footprints that hadn’t been blown away in the wind, concluding that they belonged to a wolf.
| A．ignored | B．inspected | C．expanded | D．defended |
Xi’an was attacked by such a terrible smog _____ few residents had ever experienced before.
| A．which | B．and it was | C．as | D．that |
____ an important decision more on emotion than on reason, you will regret it sooner or later.
| A．Basing | B．To base | C．Based | D．Base |
The way _____ was thought of by him was similar to the way ______ we carried it out.
| A．that, in which | B．which, which |
| C．what, / | D．it, that |
You can not imagine what great difficulty we had _____ the home for the old.
| A．to set up | B．setting up |
| C．set up | D．to setting up |
--- Hi, Jane, I’m going out for a walk in the park. --- ______ !
| A．That’s all right | B．Good exercise |
| C．Sounds great | D．How nice you are |