【单选题】
We employ about seven hundred full-time people. But we（）causal staff when we need them.
A、 check in
B、 taken in
C、 check out
D、 take on
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搜题
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第3题
A、A. R3 is an ABR. B、B. R3 is not connec ted to the backbone. C、C. R3 has four neighbors. D、D. R3 is the DR for area 2.
第5题
A、A．have willingness to do so B、B．have love for them C、C．get into connection with them D、D．care about them E、
