他用旧木板和绳子巧妙地搭了一个临时书架。

He ___contrived a temporary bookshelf out of old planks and ropes.

她精心策划了一个计谋来陷害她的同事。

She ___contrived a clever scheme to frame her coworker.

尽管设备简陋，他还是设法完成了一个出色的科学实验。

With limited equipment, he ___contrived to carry out an excellent science experiment.