The magician attracted the attention of the audience and the

The magician attracted the attention of the audience and they____carefully when he was performing.
[A] noticed [B] saw [C] observed [D] inspected
2.
You need to improve your ___[A.performance B.image C.impression]if you want to be elected monitor.
3.
You changed your job?
Not really.I ____[A.am helping B.have been helping] out until they find an appropriate employee.
都说明原因,

[B] saw 其实有watched更好
A.performance 表演
B have been helping