透水预兆中,顶板“挂汗”多呈尖形水珠,有“承压欲滴”之势。
参考答案:对
He seems __________ what he is looking for. [ ]
A. to have forgotten
B. to forget
C. forgetting
D. being forgotten
The red skirts _____ Betty's.[ ]
A. /
B. am
C. is
D. are