I could have called you for help, but I ____ your number.  
#90107
A
couldn’t remember
B
didn’t remember
C
should have remembered
D
hadn’t remembered
推荐题目
________ your letter, I would have started off two days ago.
#87250
A
If I received
B
Should I receive
C
If I could have received
D
Had I received
—Turn off the TV,Jack._______ your homework now?—Mum,just ten more minutes,please.
#89090
A
Should you be doing
B
Shouldn’t you be doing
C
Couldn’t you be doing
D
Will you be doing