The policeman came up to the only house with the door _____,____ there for a while and then entered it.( ) A. open; to stand
B. opening; stood
C. open; stood
D. opened; standing 这题选C,不太懂并列谓语的解释,最多可以有几个并列呢?
新概念二册L33课:She knew she was near the shore because the light was high up on the
cliffs. 句中high up与on the cliffs之间的关系?high up在此是adj?还是adv?起什么作用?与on the cliffs什么关系?