---Why didn’t you go to yesterday’s meeting?---I would have but I ______ too busy working on the important experiment.
#104208
A
had been
B
was
C
were
D
am
推荐题目
The student told me that he _______ the exam _______.
#101041
A
has had; yesterday
B
had; the day before yesterday
C
had had; the day before
D
had had; yesterday
Though I was tired out that evening, I _____ from falling asleep by the great pain in my knee. 
#100941
A
was prevented
B
had prevented
C
has prevented
D
am prevented