4. form the adjective or- ing form and complete the gaps. 1) excuse me, but ( is absolutely prohibited here. (smoke) 2) he is really good at ( with small children.(work) he knows how to use their natural curiosity to get them ( in learning.(interest) 3)why don't you talk with your parents about it? they are (22) about your future more than any one else. ( concern) 4) extreme sports may be very (23) but very dangerous too.(excite) 5) you should be very careful if you want to do mountain( or something of this kind. (bike) ,.
2 working; interesting
3 concerning
4 exciting
5 biking