since it’s an action verb - land - saying “to land” emphasizes the action. Some verbs just sound better with “to” vs “-ing”. There are many that only work with to or ing. This link is helpful withverbs that are one way or the other:以上是我得到的回应,跟我上面的回应一样,唸起来较强调这个动作http://0rz.tw/VxOUJ