题目

23.The modern technology to shrink(缩短) the distances of runways which large and fast aircraft use.
a.has begun b.have begun
c.began d.had begun
12.Once you the brand of whisky,you will never want to drink any other.
a.drunk b.have drunk c.will drink d.drank
17.He was disappointed that all of the guests when he at the party.
a.left,had arrived b.left,arrived
c.had left,had arrived d.had left,arrived
18.How long you the army till now?
a.did,join b.have,joined
c.have,been d.have,served in
–Nancy is not coming tonight.
A.promises B.promised
C.will promise D.had promised
..为什么啊- -..

提问时间：2021-03-21

答案

1."which large and fast aircraft use"表示现在时态,原句意思表示已经开始了,所以是现在完成时2.个人认为应该是一般时,“主将重现”语法.但是没有一般时.只能是完成时,意思是“一旦你尝过威士忌,你将不想要其他的了...