| volunteer(verb, advance, accept, start, challenge) |
| whirl(noun, go, turn, crack, try) |
| wrestle(verb, play, fight, challenge, face) |
| business(noun, activity, firm, responsibility, job) |
| try to(verb, phrasal verb) |
| R and D(noun, expression, idiom, study, measure) |
| acquire(verb, accept, develop, turn, assume) |
| activity(noun, business, company, action, strain) |
| add(verb, accept, develop, turn, assume) |
| add up(verb, expression, mean, plan, resolve) |
| address(verb, mean, direct, plan, design) |
| address oneself(verb, expression, accept, start, try) |
| address oneself to(verb, expression, idiom, accept, turn) |
| adopt(verb, accept, develop, turn, assume) |
| agree(verb, accept, start, try, assume) |
| agree to do(verb, expression, idiom, accept, turn) |
| aim for(verb, expression, desire, practice, seek) |
| aim to |
| analysis(noun, study, check, measure, struggle) |
| angle(verb, mean, direct, plan, design) |