1．Many people were all ________(terrify) by the ________(terrify) scene caused by the car accident.
答案：terrified; terrifying 句意：很多人被车祸造成的可怕场景吓住了。terrifying修饰物，指物的特点；terrified指人的心理状态。
2．The salesgirls always give customers ______(please) smile and the customers are very ________(please)．
答案：pleasant; pleased 句意：这些女售货员经常笑对顾客，使他们很满意。pleasant smile甜甜的微笑；pleased满意的，符合题意。
3．At the airport, the father stood there with a ________(mix) of desire and excitement waiting for his son, who he hadn't seen for a long time.
答案：mixture mixture“混合”，a mixture of desire and excitement表示“既期望又激动的复杂心情”。
