摘要： Watching children, particularly they don’t know you are doing so, is really a pleasure. A. as B. while C. when D. since
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Watching children, particularly ________ they don't know you are doing so, is really a pleasure.
- A.as
- B.when
- C.while
- D.since
Watching children, particularly they don’t know you are doing so, is really a pleasure.
A. as B. while C. when D. since
Watching children, particularly ________ they don't know you are doing so, is really a pleasure.
[ ]
A．as
B．since
C．after
D．that