30. – Why does the boss look worded?– Tom left the company a month ago and his work unfinished ever since.
#103900
A
has been left
B
was left
C
left
D
is leaving
推荐题目
 — How long_________in Hong Kong?  — For just the weekend. I’ll be back next Monday morning.  
#102400
A
have you stayed
B
are you staying
C
did you stay
D
do you stay
As she _________the newspaper, Granny _________asleep.
#100868
A
read, was falling
B
was reading, fell
C
was reading, was falling
D
read, fell
--- I’m sure Andrew will win the first prize in the final.  --- I think so.  He _____ for it for months. 
#103307
A
is preparing
B
was preparing
C
had been preparing
D
has been preparing