Question

he likes to ____in white in summer.

In summer,he likes to keep the door______
A.opend B.opening C.open D.to open

Answer 1

选c,这句话意思是“夏天的时候,他喜欢把门开着”
keep表示 “……处于某种状态”,在这句话里就是“使门一直处于开着的状态”
在这种情况下,keep常跟复合结构（keep＋宾语＋补语）.用作宾语补足语常见的词有现在分词、过去分词、形容词、副词以及介词短语.
e.g.He kept me waiting for half an hour.
他让我等了半个小时.
Keep your mouth shut and your eyes open.
少说话,多观察.