单选题
The new employees will ______ during training sessions.
A、
(A) catch out
B、
(B) catch on
C、
(C) catch in
D、
(D) catch down
【正确答案】
B
【答案解析】
To catch on means to become familiar with doing something. Choices (A), (C), and (D) are not correct two-word verbs.
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