题目内容：

1.I don't think he _______his best to do the job.
Adid Bdoes Cdidn't Ddoesn't do
2.There_______a hotel at the foot of the hill.
A is used to be B used to have C has D used to be
为什么,

优质解答

A
过去时态,因为已经发生.think从句,否定前置,前面有not,后面就不用加+
我认为他没有尽他全力做这工作.
D
used to be 曾经有
is used to be 习惯
used to have 曾经有,主语是人