1.They can do lots of __dangerous___________(danger) work for us.
2.I’ll walk to school today instead of ___riding________ (ride) a bike.
3.The telephone rang while I __doing__________(do) my homework.
4.There are no ____living_________(live) things on other planets.
5.The Internet makes our life __more_interesting____________(interesting) than before.
6.We can use pencils _to__draw__________(draw) pictures.
7.Do you know how ____to use________(use) a dictionary?
8.What are you doing there?I __am repairing______________(repair) my computer.
9.Robots will make humans _lose_________ (lose) their jobs.
10.I’m trying ____to call__________(call) for help.