I had been working on math for the whole afternoon and the numbers ________ before my eyes.
#100003
A
swim
B
swam
C
swimming
D
had swum
推荐题目
I am so tired,for I ________ English for 2 hours.
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A
is studying 
B
have been studying
C
was studying 
D
had been studying
--- Look!Somebody ___ the sofa.--- Well,it wasn’t me. I didn’t do it.
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A
is cleaning
B
was cleaning
C
has cleaned
D
had cleaned
She gave me half, and  _____  the other half for her husband
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A
kept
B
had kept
C
keeps
D
will keep