问题

The past two years ________ a sharp rise in oil price, which adds to the burden of auto transportation industry

A:witnessed
B:has witnessed
C:is witnessing
D:witnesses

正确答案是：

同类题型

Is the woman your mother, Jim— Yes, ___________. She is an English teacher.

When _______ homework , you should becareful .

Do you know if he__________ back tomorrow— Sorry, I don’t know. If he__________ back, I will tell you at once.

ower is a kind of quality, ________ is ________ it takes to do anything well

has written two novels, both of ________ havebeen made into television series.