undertake

她决定攻读博士学位，这将花费数年时间。

She decided to ___undertake a PhD, which would take several years.

研究人员经常进行复杂的研究来验证他们的假设。

Researchers often ___undertake complex studies to test their hypotheses.

委员会将对那些指控进行全面调查。

The committee will ___undertake a full investigation into the allegations.