verb

perform (an action, the precise nature of which is often unspecified).

very little work has been done in this field

carry out,undertake,discharge,execute,perpetrate,perform,accomplish,implement,achieve,complete,finish,conclude,bring about,engineer,effect,realize,pull off,effectuate

verb

used before a verb (except be, can, may, ought, shall, will ) in questions and negative statements.

do you have any pets?