Add the suffix “-ing” to the words given below. Then complete the following sentences with the words thus formed. 一些名词加上后缀 -ing 可构成名词或形容词。如 wed+ing=wedding n. 结婚;婚礼; threaten+ ing=threatening adj. 威胁(性)的;恐吓(性)的。 teach spell climb amaze relax 1. How yoga achieves its ___________ effects is not completely clear. 2. Animals can do many ___________ things when they are properly trained. 3. She’s considering finding a job of ___________. 4. Many people find it a erous thing to go mountain _______