【推荐2】Steve ________(看起来很茫然) and said he had no idea what I was talking about. (根据汉语提示完成句子)

【推荐1】Chemical pesticides and _____________ _____________ have been in _____________ _____________ in farming since the middle of the 20th century.
自20世纪中叶以来，化学农药和人工肥料便广泛应用于耕作。

【推荐1】In view of these factors,you’d better finish your teaching tasks ________(提前). （根据汉语提示完成句子）

【推荐2】________ ________ ________ ________(上网成瘾), many kids have lost interest in study. (根据汉语提示完成句子)

【推荐3】We feel quite secure now because of presence of policemen__________in the public. (根据汉语提示完成句子)
在公众场合由于便衣警察的存在, 我们现在感觉安全多了。

【推荐2】她们站在远处眺望，看到湖的南边从尼亚加拉大瀑布上升腾而起的水雾，感到非常震撼。
Standing in the distance, they _________ misty clouds rising from the great Niagara Falls, which is on the south side of the lake.