George once told me that he would visit our house，but，for various reasons，he________so far.
#99717
A
didn't
B
hasn't
C
hadn't
D
wouldn't
推荐题目
A professor of biology gave a talk to more than 1000 students on elephants living conditions and the dangers _______ them.
#102758
A
face
B
facing
C
faced
D
are facing
—You didn’t go to the party last night, did you? —I do wish I _________ there, but I had to do my homework.
#102947
A
was
B
had been
C
went
D
have been
---I’m sure Andrew will win the first prize in the final. ---I think so. He _____ for it months.
#101313
A
is preparing
B
has been preparing
C
was preparing
D
had been preparing
---Have you seen Jane this week?---No, but I ________ her call on my way to work this morning.
#100624
A
received
B
have received
C
had received
D
was receiving
He kept looking at her, wondering whether he her somewhere.
#101594
A
saw
B
has seen
C
sees
D
had seen