—Have you finished your experiment report, Jane?—Oh, my God. I’ve _____ forgotten all about that.

(2014·山东实验中学二模)You can never be________careful，the road is icy and slippery.

When it comes to a foreign language, he is not ________ quick a learner as his brother.

The task is too much for him, so he can’t continue ______any longer. He must get some help.

It is believed that high achievers work toward personal standards of excellence ______ material rewards.