Humans go against nature so environment is getting worse and worse.
| A．the ; an | B．/;an | C．the;the | D．/;the |
--- Won’t you go to Kathy’s wedding party?
--- No, _____ invited.
| A．though | B．if | C．as | D．once |
---Did they tell you the final decision of the committee?
---No, they didn’t, but I think I ought to ______.
| A．/ | B．be | C．have | D．have been |
－Why didn’t Tom give you one of his paintings?
－I didn’t want one，but he would have given me one if I______.
| A．did | B．would | C．will | D．had |
_________, the weather in America is different from place to place.
| A．As China | B．Like in China | C．Like China | D．As in China |
It is rather difficult to make friends with her, but her friendship, _______, is truer than any other’s.
| A．while gaining | B．after gaining | C．when to gain | D．once gained |