问题补充：
Our chemistry teacher a better way of working out the problem this morning.
A. caught up with
B. came up with
C. put up with
D. got on with
答案：
A. caught up with
(答案→)B. came up with
C. put up with
D. got on with
解析：catch up with赶上，追上；come up with提出，想出；put up with忍受；get on with继续干。句意：今天早晨我们的化学老师提出了一个更好的方法来解决这个问题。根据句意故选B。
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