Someone who lacks staying power and perseverance is unlikely to __________ a good researcher.[ ]

We had wanted to finish our task by noon, but it didn’t quite ________ as planned. [ ]

I feel blue these days.—Why What makes you so _________ Cheer up, please.

She promised to ______ at the meeting but she didn’t ______.[ ]

What do you think made Mary so upset?-_________ her new bike.[ ]