| help out(expression, help, attack, aid) |
| hop to it(verb, expression, idiom, help, attack) |
| impel(verb, make, open, start) |
| join in(expression, help, aid) |
| jump in(verb, expression, help, attack) |
| lay foundation for(verb, expression, idiom, make, open) |
| lend a hand(verb, expression, idiom, help, attack) |
| make active(verb, expression, make, open, start) |
| motivate(verb, make, open, start) |
| mount(verb, make, open, develop, start) |
| occasion(verb, make, open, start, establish) |
| participate(help, aid) |
| start the ball rolling(verb, expression, idiom, form, make) |
| subscribe(verb, help, attack, open, start) |
| trigger(verb, make, open, start) |
| volunteer(verb, help, attack, accept, start) |
| wade in(verb, expression, help, attack) |
| get underway(verb, expression, make, open, start) |
| set in train(verb, expression, idiom, make, open) |
| start in on(verb, expression, idiom, make, open) |