Question

【题目】A lot of trees _________ around here every year, and we can enjoy fresher air now.
A.were planted
B.are planted
C.will plant
D.are planting

Answer 1

【答案】B
【解析】根据a lot of trees作主语，要用被动语态；根据every year要用一般现在时，所以用一般现在时的被动语态。句意：周围每年都种很多树，我们能够享受新鲜空气了。故选B。