I had been working on math for the whole afternoon and the numbers        before my eyes.
#102156
A
swim
B
swum
C
swam
D
had swum
推荐题目
In such dry weather the flowers will have to be watered if they ____.
#103576
A
have survived
B
would survive
C
are to survive
D
should survive
Call me when you_ ____at the railway station, Alice, I’ll go there to meet you.
#99841
A
arrive
B
would arrive
C
have arrived
D
are arriving
The three of us ________ around Europe for about a month last summer.
#101831
A
travelled
B
have travelled
C
had travelled
D
travel