问题补充:
-He seems to be doing nothing, buthe is just waiting for his chance.
A. actually
B. gradually
C. frequently
D. certainly
答案:
(答案→)A. actually
B. gradually
C. frequently
D. certainly
解析:副词辨析。A实际上;B逐渐;C频繁地;D当然;句意:他似乎什么都没有做,但实际上她在等待他的机会的出现。根据句意说明A正确。