工程监理的中心任务，归结为( )。
A．“四管二控一协调”
B．“一管二控三协调”
C．“四控三管二协调”
D．“四控二管一协调”
参考答案：D
I had no idea how it______ that he should have been late for class three times a week.
A．came across
B．came about
C．came out
D．came down
A large number of people（）present at the meeting, which was out of our expectation.
A.was
B.were
C.have
D.has
