—Do you plant trees in spring, Mike?
—Yes. Many trees in our city every year.
A. plant
B. are planting
C. have planted
D. are planted
网友回答
A. plant
B. are planting
C. have planted
(答案→)D. are planted
解析：句意：麦克，你春天植树吗？是的，每年我们的城市都会种植很多树。为“每年我们城市都要栽很多树”。此句为一般现在时的被动语态。